Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2011	May 06, 2011
Document and Entity Information
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q1
Entity Registrant Name	DCP Midstream Partners, LP
Entity Central Index Key	0001338065
Trading Symbol	dpm
Entity Filer Category	Large Accelerated Filer
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		44,083,418

Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 5.0	$ 6.7
Accounts receivable:
Trade, net of allowance for doubtful accounts of $0.5 million for each period	81.1	89.3
Affiliates	69.4	61.7
Inventories	42.1	64.1
Unrealized gains on derivative instruments	0.9	1.9
Assets held for sale		6.2
Other	1.4	2.1
Total current assets	199.9	232.0
Property, plant and equipment, net	1,120.6	1,097.1
Goodwill	146.8	139.3
Intangible assets, net	117.8	119.3
Investments in unconsolidated affiliates	216.0	216.9
Unrealized gains on derivative instruments	3.1	1.4
Other long-term assets	7.1	7.2
Total assets	1,811.3	1,813.2
LIABILITIES AND EQUITY
Trade	89.1	99.1
Affiliates	31.1	37.6
Unrealized losses on derivative instruments	54.3	43.0
Taxes payable	39.5
Other	25.8	31.5
Total current liabilities	239.8	211.2
Long-term debt	675.8	647.8
Unrealized losses on derivative instruments	69.2	50.3
Other long-term liabilities	15.7	53.1
Total liabilities	1,000.5	962.4
Commitments and contingent liabilities
Equity:
Predecessor equity		112.6
Common unitholders (44,083,418 and 40,478,383 units issued and outstanding, respectively)	619.0	552.2
General partner	(6.0)	(6.4)
Accumulated other comprehensive loss	(23.3)	(27.7)
Total partners' equity	589.7	630.7
Noncontrolling interests	221.1	220.1
Total equity	810.8	850.8
Total liabilities and equity	$ 1,811.3	$ 1,813.2

Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2011	Dec. 31, 2010
Condensed Consolidated Balance Sheets
Allowance for doubtful accounts	$ 0.5	$ 0.5
Common unitholders, units issued	44,083,418	40,478,383
Common unitholders, units outstanding	44,083,418	40,478,383

Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
Operating revenues:
Sales of natural gas, propane, NGLs and condensate	$ 297.5	$ 235.4
Sales of natural gas, propane, NGLs and condensate to affiliates	132.2	135.0
Transportation, processing and other	30.5	21.6
Transportation, processing and other to affiliates	5.1	5.7
(Losses) gains from commodity derivative activity, net	(38.9)	6.0
Losses from commodity derivative activity, net - affiliates	(1.3)
Total operating revenues	425.1	403.7
Operating costs and expenses:
Purchases of natural gas, propane and NGLs	222.3	191.5
Purchases of natural gas, propane and NGLs from affiliates	152.7	141.3
Operating and maintenance expense	24.1	19.0
Depreciation and amortization expense	19.9	17.8
General and administrative expense	4.2	3.7
General and administrative expense - affiliates	4.8	4.9
Other income	(0.1)
Total operating costs and expenses	427.9	378.2
Operating (loss) income	(2.8)	25.5
Interest expense	(8.0)	(7.2)
Earnings from unconsolidated affiliates	8.6	14.4
(Loss) income before income taxes	(2.2)	32.7
Income tax expense	(0.2)	(0.3)
Net (loss) income	(2.4)	32.4
Net income attributable to noncontrolling interests	(3.5)	(0.1)
Net (loss) income attributable to partners	(5.9)	32.3
Net loss attributable to predecessor operations		(6.5)
General partner's interest in net income	(5.5)	(3.8)
Net (loss) income allocable to limited partners	$ (11.4)	$ 22.0
Net (loss) income per limited partner unit - basic	$ (0.28)	$ 0.64
Net (loss) income per limited partner unit - diluted	$ (0.28)	$ 0.64
Weighted-average limited partner units outstanding - basic	41.3	34.6
Weighted-average limited partner units outstanding - diluted	41.3	34.6

Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
Condensed Consolidated Statements of Comprehensive Income
Net (loss) income	$ (2.4)	$ 32.4
Other comprehensive income (loss):
Reclassification of cash flow hedge losses into earnings	5.3	6.0
Net unrealized losses on cash flow hedges	(0.9)	(7.6)
Total other comprehensive income (loss)	4.4	(1.6)
Total comprehensive income	2.0	30.8
Total comprehensive income attributable to noncontrolling interests	(3.5)	(0.1)
Total comprehensive income attributable to partners	$ (1.5)	$ 30.7

Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
OPERATING ACTIVITIES:
Net (loss) income	$ (2.4)	$ 32.4
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization expense	19.9	17.8
Earnings from unconsolidated affiliates	(8.6)	(14.4)
Distributions from unconsolidated affiliates	11.3	12.5
Other, net	2.3	0.5
Change in operating assets and liabilities, which provided (used) cash net of effects of acquisitions:
Accounts receivable	0.5	31.9
Inventories	22.0	(8.9)
Net unrealized losses (gains) on derivative instruments	33.9	(7.8)
Accounts payable	(15.1)	(9.3)
Accrued interest	2.1
Other current assets and liabilities	0.1	(0.9)
Other long-term assets and liabilities	(2.0)	(0.1)
Net cash provided by operating activities	64.0	53.7
INVESTING ACTIVITIES:
Capital expenditures	(13.7)	(12.2)
Acquisitions, net of cash acquired	(37.1)	(22.0)
Acquisition of unconsolidated affiliate	(114.3)
Investments in unconsolidated affiliates	(0.1)	(0.7)
Proceeds from sale of assets	0.2	0.2
Proceeds from sales of available-for-sale securities		10.1
Net cash used in investing activities	(165.0)	(24.6)
FINANCING ACTIVITIES:
Proceeds from debt	547.0	116.6
Payments of debt	(519.0)	(114.6)
Payment of deferred financing costs	(0.1)
Proceeds from issuance of common units, net of offering costs	139.7
Excess purchase price over acquired assets	(35.7)
Net change in advances to predecessor from DCP Midstream, LLC		(2.7)
Distributions to unitholders and general partner	(30.1)	(24.6)
Distributions to noncontrolling interests	(5.4)	(3.7)
Contributions from noncontrolling interests	2.9	3.9
Purchase of additional interest in a subsidiary		(3.5)
Net cash provided by (used in) financing activities	99.3	(28.6)
Net change in cash and cash equivalents	(1.7)	0.5
Cash and cash equivalents, beginning of period	6.7	2.1
Cash and cash equivalents, end of period	$ 5.0	$ 2.6

Condensed Consolidated Statements of Changes in Equity (USD $) In Millions, unless otherwise specified	Total	Predecessor Equity [Member]	Common Unitholders [Member]	General Partner [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2009	$ 676.2	$ 70.8	$ 415.5	$ (5.9)	$ (31.9)	$ 227.7
Net change in parent advances	(2.7)	(2.7)
Purchase of additional interest in a subsidiary	(4.5)		1.0			(5.5)
Distributions	(28.3)		(20.8)	(3.8)		(3.7)
Distributions to unitholders and general partner	(24.6)
Distributions to noncontrolling interests	(3.7)
Contributions from noncontrolling interests	3.9					3.9
Comprehensive income (loss):
Net income attributable to predecessor operations	6.5	6.5
Net income	32.4
Net income at Jan. 01, 2010 (Scenario, Previously Reported [Member])	25.9		21.9	3.9		0.1
Reclassification of cash flow hedge losses into earnings	6.0				6.0
Net unrealized losses on cash flow hedges	(7.6)				(7.6)
Total comprehensive income (loss)	30.8	6.5	21.9	3.9	(1.6)	0.1
Balance at Mar. 31, 2010	675.4	74.6	417.6	(5.8)	(33.5)	222.5
Balance at Dec. 31, 2010	850.8	112.6	552.2	(6.4)	(27.7)	220.1
Net change in parent advances	1.7	1.7
Acquisition of Southeast Texas	(114.3)	(114.3)
Excess purchase price over acquired assets	(35.7)		(35.7)
Issuance of 3,596,636 common units	139.6		139.6
Equity-based compensation	1.9		1.9
Distributions to DCP Midstream, LLC	(2.6)		(2.6)
Distributions to unitholders and general partner	(30.1)		(25.0)	(5.1)
Distributions to noncontrolling interests	(5.4)					(5.4)
Contributions from noncontrolling interests	2.9					2.9
Comprehensive income (loss):
Net income	(2.4)		(11.4)	5.5		3.5
Reclassification of cash flow hedge losses into earnings	5.3				5.3
Net unrealized losses on cash flow hedges	(0.9)				(0.9)
Total comprehensive income (loss)	2.0		(11.4)	5.5	4.4	3.5
Balance at Mar. 31, 2011	$ 810.8		$ 619.0	$ (6.0)	$ (23.3)	$ 221.1

Description of Business and Basis of Presentation	3 Months Ended
Description of Business and Basis of Presentation	Mar. 31, 2011
Description of Business and Basis of Presentation
Description of Business and Basis of Presentation	1. Description of Business and Basis of Presentation DCP Midstream Partners, LP, with its consolidated subsidiaries, or us, we or our, is engaged in the business of gathering, compressing, treating, processing, transporting, storing and selling natural gas; and producing, transporting, storing and selling NGLs and condensate. We are a Delaware limited partnership that was formed in August 2005. We completed our initial public offering on December 7, 2005. Our partnership includes: our Northern Louisiana system; our Southern Oklahoma system; our 40% limited liability company interest in Discovery Producer Services LLC, or Discovery; our Wyoming system; a 75% interest in Collbran Valley Gas Gathering, LLC, or Collbran or our Colorado system (of which 5% was acquired in February 2010); our 50.1% interest in our DCP East Texas Holdings, LLC, or our East Texas system; our Michigan system; our 33.33% interest in our DCP Southeast Texas Holdings, GP, or our Southeast Texas system acquired in January 2011; our wholesale propane logistics business (which includes Atlantic Energy acquired in July 2010); and our NGL logistics business (which includes Marysville Hydrocarbons Holdings, Inc, or Marysville, acquired in December 2010, the Wattenberg pipeline acquired in January 2010 and our 100% interest in the Black Lake Pipeline Company, or Black Lake, 55% of which was acquired in July 2010, comprised of: (1) a 5% interest acquired from DCP Midstream, LLC, in a transaction among entities under common control, and (2) an additional 50% interest acquired from an affiliate of BP PLC). Our operations and activities are managed by our general partner, DCP Midstream GP, LP, which in turn is managed by its general partner, DCP Midstream GP, LLC, which we refer to as the General Partner, and is wholly-owned by DCP Midstream, LLC. DCP Midstream, LLC and its subsidiaries and affiliates, collectively referred to as DCP Midstream, LLC, is owned 50% by Spectra Energy Corp, or Spectra Energy, and 50% by ConocoPhillips. DCP Midstream, LLC directs our business operations through its ownership and control of the General Partner. DCP Midstream, LLC and its affiliates' employees provide administrative support to us and operate most of our assets. DCP Midstream, LLC owns approximately 27% of us. The condensed consolidated financial statements include the accounts of the Partnership and all majority-owned subsidiaries where we have the ability to exercise control and undivided interests in jointly owned assets. Investments in greater than 20% owned affiliates that are not variable interest entities and where we do not have the ability to exercise control, and investments in less than 20% owned affiliates where we have the ability to exercise significant influence, are accounted for using the equity method. Intercompany balances and transactions have been eliminated. On January 1, 2011, we acquired a 33.33% interest in Southeast Texas for $150.0 million, in a transaction among entities under common control. Transfers of net assets between entities under common control are accounted for as if the transfer occurred at the beginning of the period, and prior years are retrospectively adjusted to furnish comparative information similar to the pooling method. Accordingly, our condensed consolidated financial statements have been adjusted to include the historical results of our equity interest in Southeast Texas for all periods presented. We refer to our 33.33% interest in Southeast Texas, prior to our acquisition from DCP Midstream, LLC in January 2011, as our "predecessor." We recognize transfers of net assets between entities under common control at DCP Midstream, LLC's basis in the net assets contributed. The amount of the purchase price in excess of DCP Midstream, LLC's basis in the net assets is recognized as a reduction to partners' equity. The financial statements of our predecessor have been prepared from the separate records maintained by DCP Midstream, LLC and may not necessarily be indicative of the conditions that would have existed or the results of operations if our predecessor had been operated as an unaffiliated entity. The results of operations for acquisitions accounted for as business combinations have been included in the condensed consolidated financial statements since their respective acquisition dates and we have retrospectively adjusted the December 31, 2010 condensed consolidated balance sheet for changes in our preliminary purchase price allocation for our December 31, 2010 acquisition of Marysville. The condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America, or GAAP. Conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and notes. Although these estimates are based on management's best available knowledge of current and expected future events, actual results could differ from those estimates. All intercompany balances and transactions have been eliminated. Transactions between us and other DCP Midstream, LLC operations have been identified in the condensed consolidated financial statements as transactions between affiliates. The accompanying unaudited condensed consolidated financial statements in this Quarterly Report on Form 10-Q have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission, or SEC. Accordingly, these condensed consolidated financial statements reflect all normal recurring adjustments that are, in the opinion of management, necessary to present fairly the financial position and results of operations for the respective interim periods. Certain information and notes normally included in our annual financial statements have been condensed or omitted from these interim financial statements pursuant to such rules and regulations. Results of operations for the three months ended March 31, 2011 are not necessarily indicative of the results that may be expected for the year ending December 31, 2011. These condensed consolidated financial statements and other information included in this Quarterly Report on Form 10-Q should be read in conjunction with the consolidated financial statements and notes thereto included in our 2010 Form 10-K.

- Definition

Description containing the entire organization, consolidation and basis of presentation of financial statements disclosure. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows. Describes procedure if disclosures are provided in more than one note to the financial statements.

+ References+ Details

Recent Accounting Pronouncements	3 Months Ended
Recent Accounting Pronouncements	Mar. 31, 2011
Recent Accounting Pronouncements
Recent Accounting Pronouncements	2. Recent Accounting Pronouncements Financial Accounting Standards Board, or FASB, Accounting Standards Update, or ASU, 2010-29 "Business Combinations (Topic 805): Disclosure of Supplementary Pro Forma Information for Business Combinations", or ASU 2010-29 — In December 2010, the FASB issued ASU 2010-29 which amended Accounting Standards Codification, or ASC, Topic 805 "Business Combinations" to specify that if a public entity presents comparative financial statements, the entity should disclose revenue and earnings of the combined entity as though the business combination that occurred during the year had occurred as of the beginning of the comparable prior annual reporting period only. The ASU also expands the supplemental pro forma disclosures under Topic 805 to include a description of the nature and the amount of material, nonrecurring pro forma adjustments directly attributable to the business combination included in the reported pro forma revenue and earnings. ASU 2010-29 is effective for business combinations for which the acquisition date is on or after January 1, 2011. The provisions of ASU 2010-29 impact disclosure only. We have not had any business combinations that fall under the guidance of ASU 2010-29 and consequently, there was no impact on our disclosures as a result of adoption. *ASU 2010-28 "Intangibles—Goodwill and Other (Topic 350): When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts",* or ASU 2010-28 — In December 2010, the FASB issued ASU 2010-28 which amended ASC Topic 350 "Intangibles—Goodwill and Other". ASU 2010-28 requires an entity with reporting units that have carrying amounts that are zero or negative to assess whether it is more likely than not that the reporting units' goodwill is impaired. If the entity determines that it is more likely than not that the goodwill of one or more of its reporting units is impaired, the entity is required to perform Step 2 of the goodwill impairment test for those reporting unit(s) and record any resulting impairment as a cumulative-effect adjustment to beginning retained earnings. The provisions of ASU 2010-28 became effective for us on January 1, 2011. We do not have any reporting units that fall under the guidance of ASU 2010-28 and consequently, there was no effect on our condensed consolidated results of operations, cash flows or financial position as a result of adoption. *ASU, 2010-06 "Fair Value Measurements and Disclosures (Topic 820): Improving Disclosures about Fair Value Measurements",* or ASU 2010-06 — In January 2010, the FASB issued ASU 2010-06 which amended ASC Topic 820-10 "Fair Value Measurement and Disclosures—Overall." ASU 2010-06 requires new disclosures regarding transfers in and out of assets and liabilities measured at fair value classified within the valuation hierarchy as either Level 1 or Level 2 and information about sales, issuances and settlements on a gross basis for assets and liabilities classified as Level 3. ASU 2010-06 clarifies existing disclosures on the level of disaggregation required and inputs and valuation techniques. The provisions of ASU 2010-06 became effective for us on January 1, 2010, except for disclosure of information about sales, issuances and settlements on a gross basis for assets and liabilities classified as Level 3, which became effective for us on January 1, 2011. The provisions of ASU 2010-06 impact only disclosures and we have disclosed information in accordance with the provisions of ASU 2010-06 within this filing. *ASU 2009-13 "Revenue Recognition (Topic 605) Multiple-Deliverable Revenue Arrangements",* or ASU 2009-13 — In October 2009, the FASB issued ASU 2009-13 which amended ASC Topic 605 "Revenue Recognition." The ASU addresses the accounting for multiple-deliverable arrangements, to enable vendors to account for products or services separately rather than as a combined unit. ASU 2009-13 became effective for us on January 1, 2011 and there was no impact on our condensed consolidated results of operations, cash flows and financial position as a result of adoption.

Acquisitions

3 Months Ended

Mar. 31, 2011

Acquisitions

Acquisitions

3. Acquisitions

On March 24, 2011, we acquired two NGL fractionation facilities in Weld County, Colorado, located in the Denver-Julesburg, or DJ, Basin, from a third party in a transaction accounted for as an asset acquisition. We paid a purchase price of $30.0 million, financed initially at closing with borrowings under the Partnership's revolving credit facility, and received a post-closing purchase price adjustment of $0.4 million. The NGL fractionation facilities, or the DJ Basin NGL Fractionators, are located on DCP Midstream, LLC's processing plant sites and are operated by DCP Midstream, LLC. Subsequent to our acquisition, DCP Midstream, LLC will continue to operate and supply certain committed NGLs produced by them in Weld County to our DJ Basin NGL Fractionators under the existing agreements that are effective through March 2018. The results of the assets are included in our NGL Logistics segment prospectively, from the date of acquisition.

On January 1, 2011, we acquired a 33.33% interest in Southeast Texas for $150.0 million, in a transaction among entities under common control, financed initially at closing with proceeds from our November 2010 public equity offering and borrowings under the Partnership's revolving credit facility. DCP Midstream, LLC's historical carrying value of the net assets acquired in the acquisition was $114.3 million; accordingly we have recorded the $35.7 million excess purchase price over acquired assets as a decrease in common unitholders equity. The results of our 33.33% interest in Southeast Texas are included in our Natural Gas Services segment for all periods presented.

On December 30, 2010, we acquired all of the interests in Marysville. The acquisition involved three separate transactions with a number of parties. We acquired a 90% interest in Marysville from Dart Energy Corporation, a 5% interest in Marysville from Prospect Street Energy, LLC and 100% of EE Group, LLC, which owned the remaining 5% interest in Marysville. We paid a purchase price of $94.8 million plus $6.0 million for net working capital and other adjustments for an aggregate purchase price of $100.8 million, subject to customary purchase price adjustments, for our 100% interest. The cash purchase was financed initially at closing with borrowings under the Partnership's revolving credit facility. $21.2 million of the purchase price has been deposited in an indemnity escrow to satisfy certain tax liabilities and provide for breaches of representations and warranties of the sellers. The results of the Marysville acquisition are included in our NGL Logistics segment prospectively, from the date of acquisition.

On January 4, 2011, we merged two wholly-owned subsidiaries of Marysville and converted the combined entity's organizational structure from a corporation to a limited liability company. This conversion to a limited liability company triggered tax liabilities, resulting from built-in tax gains recognized in the transaction, to become currently payable. Accordingly, $35.0 million of estimated deferred tax liabilities associated with this transaction and recorded at December 31, 2010, became currently payable as of January 4, 2011. These tax liabilities are unrelated to the tax liabilities of Marysville for which an indemnity escrow has been established. These tax liabilities may be greater or less than the $35.0 million currently recorded in our balance sheet as of March 31, 2011, depending on the final accounting for the Marysville business combination.

We have updated our accounting for the Marysville business combination for the fair value of assets acquired and liabilities assumed including intangible assets and property, plant and equipment and goodwill. The December 31, 2010 condensed consolidated balance sheet included in this report has been retrospectively adjusted to reflect the impact of this change. The purchase price allocation is preliminary and is based on initial estimates of fair values at the date of the acquisition. We are currently evaluating the preliminary purchase price allocation, which will be adjusted as additional information relative to the fair value of assets and liabilities becomes available. This allocation may change in subsequent financial statements pending the final estimates of fair value and the final outcome of our estimated tax liabilities. The preliminary purchase price allocation as of December 31, 2010 compared to the preliminary purchase price allocation as of March 31, 2011 is as follows:


	December 31, 2010			March 31, 2011			Change
				(Millions)
Aggregate consideration	$	100.8		$	100.8		$	—

Cash		3.1			3.1			—
Accounts receivable		1.1			1.1			—
Inventory		5.7			4.6			(1.1	)
Other current assets		0.7			0.7			—
Property, plant and equipment		129.9			57.9			(72.0	)
Intangible assets		—			32.3			32.3
Goodwill		—			39.6			39.6
Other long-term assets		—			1.2			1.2
Other current liabilities		(4.7	)		(4.7	)		—
Long-term liabilites		(35.0	)		(35.0	)		—

Total preliminary purchase price allocation	$	100.8		$	100.8		$	—

Combined Financial Information

The results of our 33.33% interest in Southeast Texas and the impact of the Marysville preliminary purchase price allocation adjustments are included in the condensed consolidated balance sheets as of March 31, 2011 and December 31, 2010. The following table presents the previously reported December 31, 2010 condensed consolidated balance sheet, adjusted for the acquisition of a 33.33% interest in Southeast Texas from DCP Midstream, LLC and the impact of adjustments to the preliminary purchase price allocation for Marysville:

As of December 31, 2010


	DCP Midstream Partners, LP (As previously reported)			Marysville			Southeast Texas (a)		Combined DCP Midstream Partners, LP (As currently reported)
	(Millions)

ASSETS
Current assets:
Cash and cash equivalents	$	6.7		$	—		$	—	$	6.7
Accounts receivable		151.0			—			—		151.0
Inventories		65.2			(1.1	)		—		64.1
Other		10.2			—			—		10.2

Total current assets		233.1			(1.1	)		—		232.0
Property, plant and equipment, net		1,169.1			(72.0	)		—		1,097.1
Goodwill and intangible assets, net		186.7			71.9			—		258.6
Investments in unconsolidated affiliates		104.3			—			112.6		216.9
Other non-current assets		7.4			1.2			—		8.6

Total assets	$	1,700.6		$	—		$	112.6	$	1,813.2


LIABILITIES AND EQUITY
Accounts payable and other current liabilities	$	211.2		$	—		$	—	$	211.2
Long-term debt		647.8			—			—		647.8
Other long-term liabilities		103.4			—			—		103.4

Total liabilities		962.4			—			—		962.4

Commitments and contingent liabilities
Equity:
Partners' equity
Predecessor equity (a)		—			—			112.6		112.6
Net equity		545.8			—			—		545.8
Accumulated other comprehensive income		(27.7	)		—			—		(27.7	)

Total partners' equity		518.1			—			112.6		630.7
Noncontrolling interests		220.1			—			—		220.1

Total equity		738.2			—			112.6		850.8

Total liabilities and equity	$	1,700.6		$	—		$	112.6	$	1,813.2

(a)

The carrying value of our 33.33% interest in Southeast Texas was $112.6 million as of December 31, 2010. As part of the closing of our acquisition on January 1, 2011, we acquired a 33.33% interest in Southeast Texas, with the exception of net liabilities of $1.7 million consisting of financial derivative instruments and certain working capital and other liabilities. Accordingly, we recognized an increase to predecessor equity of $1.7 million in our condensed consolidated statement of changes in equity, thereby reflecting the total carrying value of the net assets acquired on January 1, 2011 as $114.3 million.

The results of our 33.33% interest in Southeast Texas are included in the condensed consolidated statements of operations for the three months ended March 31, 2011 and March 31, 2010. The following table presents the previously reported condensed consolidated statements of operations for the three months ended March 31, 2010, adjusted for the acquisition of a 33.33% interest in Southeast Texas from DCP Midstream, LLC:

Three Months Ended March 31, 2010


	DCP Midstream Partners, LP (As previously reported)			Southeast Texas (a)		Combined DCP Midstream Partners, LP (As currently reported)
	(Millions)
Operating revenues:
Sales of natural gas, propane, NGLs and condensate	$	370.4		$	—	$	370.4
Transportation, processing and other		27.3			—		27.3
Gains from commodity derivative activity, net		6.0			—		6.0

Total operating revenues		403.7			—		403.7

Operating costs and expenses:
Purchases of natural gas, propane and NGLs		332.8			—		332.8
Operating and maintenance expense		19.0			—		19.0
Depreciation and amortization expense		17.8			—		17.8
General and administrative expense and other		8.6			—		8.6

Total operating costs and expenses		378.2			—		378.2

Operating income		25.5			—		25.5
Interest expense, net		(7.2	)		—		(7.2	)
Earnings from unconsolidated affiliates		7.9			6.5		14.4

Income before income taxes		26.2			6.5		32.7
Income tax expense		(0.3	)		—		(0.3	)

Net income		25.9			6.5		32.4
Net income attributable to noncontrolling interests		(0.1	)		—		(0.1	)

Net income attributable to partners	$	25.8		$	6.5	$	32.3

(a)	The results of our 33.33% interest in Southeast Texas for the three months ended March 31, 2010 includes the impact of Hurricane Ike business interruption insurance recoveries of $1.5 million.

The results of operations for acquisitions accounted for as a business combination are included in the DCP Midstream Partners, LP results subsequent to the date of acquisition. Accordingly, total operating revenues of $8.0 million and net income attributable to the Partnership of $5.8 million associated with Marysville are included in the condensed consolidated statement of operations for the three months ended March 31, 2011. Pro forma information is presented for comparative periods prior to the date of acquisition, however, comparative periods are not adjusted to include the results of the acquisition.

The following table presents unaudited pro forma information for the condensed consolidated statement of operations for the three months ended March 31, 2010, as if the acquisition of Marysville had occurred at the beginning of the period presented.


	Three Months Ended, March 31, 2010
	DCP Midstream Partners, LP			Acquisition of Marysville		DCP Midstream Partners, LP Pro Forma
	(Millions, except per unit amounts)
Total operating revenues	$	403.7		$	8.6	$	412.3
Net income attributable to partners	$	32.3		$	4.0	$	36.3
Less:
Net income attributable to predecessor operations		(6.5	)		—		(6.5	)
General partner unitholders interest in net income		(3.8	)		—		(3.8	)

Net income allocable to limited partners	$	22.0		$	4.0	$	26.0

Net income per limited partner unit — basic and diluted	$	0.64		$	0.12	$	0.76

The pro forma information is not intended to reflect actual results that would have occurred if the acquired business had been combined during the period presented, nor is it intended to be indicative of the results of operations that may be achieved by us in the future.

Agreements and Transactions with Affiliates

3 Months Ended

Mar. 31, 2011

Agreements and Transactions with Affiliates

Agreements and Transactions with Affiliates

4. Agreements and Transactions with Affiliates

DCP Midstream, LLC

Omnibus Agreement and Other General and Administrative Charges

We have entered into an omnibus agreement, as amended, or the Omnibus Agreement, with DCP Midstream, LLC. In January 2011, we extended the omnibus agreement through December 31, 2011 for an annual amount of $10.2 million.

Following is a summary of the fees we incurred under the Omnibus Agreement as well as other fees paid to DCP Midstream, LLC:


	Three Months Ended March 31,
	2011		2010
	(Millions)
Omnibus Agreement	$	2.5	$	2.5
Other fees — DCP Midstream, LLC		2.2		2.3

Total — DCP Midstream, LLC	$	4.7	$	4.8

Under the Omnibus Agreement, we are required to reimburse DCP Midstream, LLC for salaries of operating personnel and employee benefits as well as capital expenditures, maintenance and repair costs, taxes and other direct costs incurred by DCP Midstream, LLC on our behalf. We also pay DCP Midstream, LLC for certain costs incurred and centralized corporate functions performed by DCP Midstream, LLC on our behalf, including legal, accounting, cash management, insurance administration and claims processing, risk management, health, safety and environmental, information technology, human resources, credit, payroll, taxes and engineering. The Omnibus Agreement also addresses the following matters:

•

DCP Midstream, LLC's obligation to indemnify us for certain liabilities and our obligation to indemnify DCP Midstream, LLC for certain liabilities; and

•

DCP Midstream, LLC's obligation to continue to maintain its credit support, including without limitation guarantees and letters of credit, for our obligations related to commercial contracts with respect to its business or operations that were in effect at the closing of our initial public offering until the expiration of such contracts.

Any or all of the provisions of the Omnibus Agreement, other than the indemnification provisions, will be terminable by DCP Midstream, LLC at its option if the general partner is removed without cause and units held by the general partner and its affiliates are not voted in favor of that removal. The Omnibus Agreement will also terminate in the event of a change of control of us, the general partner (DCP Midstream GP, LP) or the General Partner (DCP Midstream GP, LLC).

East Texas incurs general and administrative expenses directly from DCP Midstream, LLC. During the three months ended March 31, 2011 and 2010, East Texas incurred $1.9 million and $2.0 million, respectively, for general and administrative expenses from DCP Midstream, LLC.

In addition to the Omnibus Agreement and amounts incurred by East Texas, we incurred other general and administrative fees with DCP Midstream, LLC of $0.3 million for each of the three months ended March 31, 2011 and 2010. These amounts include allocated expenses, including professional services, insurance and internal audit.

Other Agreements and Transactions with DCP Midstream, LLC

DCP Midstream, LLC was a significant customer during the three months ended March 31, 2011 and 2010.

We sell a portion of our residue gas, NGLs and condensate to, purchase natural gas and other petroleum products from, and provide gathering and transportation services for, DCP Midstream, LLC. We anticipate continuing to purchase from and sell commodities to DCP Midstream, LLC in the ordinary course of business. In addition, DCP Midstream, LLC conducts derivative activities on our behalf.

We have a contractual arrangement with DCP Midstream, LLC, through March 2022, in which we pay DCP Midstream, LLC a fee for processing services associated with the gas we gather on our Southern Oklahoma system, which is part of our Natural Gas Services segment. In addition, in February 2010, a contract was signed with DCP Midstream, LLC providing for adjustments to those fees based upon plant efficiencies related to our portion of volumes from the Southern Oklahoma system being processed at DCP Midstream, LLC's plant through March 2022. We generally report fees associated with these activities in the condensed consolidated statements of operations as purchases of natural gas, propane, NGLs and condensate from affiliates. In addition, as part of this arrangement, DCP Midstream, LLC pays us a fee for certain gathering services. We generally report revenues associated with these activities in the condensed consolidated statements of operations as transportation, processing and other to affiliates.

DCP Midstream, LLC owns certain assets and is party to certain contractual relationships around our Pelico system, included in our Northern Louisiana system, which is part of our Natural Gas Services segment, that are periodically used for the benefit of Pelico. DCP Midstream, LLC is able to source natural gas upstream of Pelico and deliver it to us and is able to take natural gas from the outlet of the Pelico system and market it downstream of Pelico. We purchase natural gas from DCP Midstream, LLC upstream of Pelico and transport it to Pelico under a firm transportation agreement with an affiliate. Our purchases from DCP Midstream, LLC are at DCP Midstream, LLC's actual acquisition cost plus any transportation service charges. Volumes that exceed our on-system demand are sold to DCP Midstream, LLC at an index-based price, less contractually agreed to marketing fees. Revenues associated with these activities are reported gross in our condensed consolidated statements of operations as sales of natural gas, propane, NGLs and condensate to affiliates.

In conjunction with our acquisition of a 33.33% interest in Southeast Texas from DCP Midstream, LLC for $150.0 million in our Natural Gas Services segment, we entered into a joint venture agreement. The terms of the joint venture agreement provide that distributions and earnings to us for the first seven years related to storage and transportation gross margin will be pursuant to a fee-based arrangement, based on storage capacity and tailgate volumes. Distributions and earnings related to the gathering and processing business, along with reductions for all expenditures, will be pursuant to our and DCP Midstream, LLC's respective ownership interests in Southeast Texas. This transaction closed on January 1, 2011.

In conjunction with our acquisition of a 50.1% limited liability company interest in East Texas, which is part of our Natural Gas Services segment, we entered into agreements with DCP Midstream, LLC whereby DCP Midstream, LLC will reimburse East Texas for certain expenditures on East Texas capital projects. These reimbursements are for certain capital projects which have commenced within three years from the respective acquisition dates. DCP Midstream, LLC made capital contributions to East Texas for capital projects of $2.9 million and $3.8 million for the three months ended March 31, 2011 and 2010, respectively.

On September 16, 2010, we entered into an agreement with DCP Midstream, LLC to sell certain surplus equipment at Collbran, part of our Natural Gas Services segment, with a net book value of $6.2 million for net proceeds of $3.6 million. The surplus equipment is the result of a consolidation of operations at our Anderson Gulch plant in the Piceance Basin. The net proceeds of $3.6 million were distributed 75% to us and 25% to the noncontrolling interest in Collbran, based upon proportionate ownership, during the year ended December 31, 2010. The sale was completed when title to the surplus equipment passed to DCP Midstream, LLC in March 2011. We have recognized a distribution of $2.6 million for the three months ended March 31, 2011 to DCP Midstream, LLC in our condensed consolidated statements of changes in equity representing the difference between the net book value and the proceeds received for the surplus equipment.

On February 11, 2009, our East Texas natural gas processing complex and natural gas delivery system known as the Carthage Hub, was temporarily shut in following a fire that was caused by a third party underground pipeline rupture outside of our property. We are actively pursuing full reimbursement of our costs and lost margin associated with the incident from the responsible third party. East Texas filed a lawsuit in December 2009, to recover damages from the responsible third party. In the event we are unable to recover our costs and lost margin from the responsible third party, we have insurance covering property damage, net of applicable deductibles. Following this incident, DCP Midstream, LLC has agreed to reimburse to us 25% of any claims received as reimbursement of costs and lost margin, from the responsible third party or from insurance. DCP Midstream, LLC will pay 75% of costs related to the incident as a result of this agreement.

In addition, in our Natural Gas Services segment, we sell NGLs processed at certain of our plants, and sell condensate removed from the gas gathering systems that deliver to certain of our systems under contracts to a subsidiary of DCP Midstream, LLC equal to that subsidiary's net weighted-average sales price, adjusted for transportation, processing and other charges from the tailgate of the respective asset.

In our NGL Logistics segment, we also have a contractual arrangement with a subsidiary of DCP Midstream, LLC that provides that DCP Midstream, LLC will pay us to transport NGLs over our Seabreeze and Wilbreeze pipelines, pursuant to fee-based rates that will be applied to the volumes transported. DCP Midstream, LLC is the sole shipper on these pipelines under the transportation agreements. We generally report revenues associated with these activities in the condensed consolidated statements of operations as transportation, processing and other to affiliates.

In conjunction with our acquisition of the Wattenberg pipeline, which is part of our NGL Logistics segment, we signed a transportation agreement with DCP Midstream, LLC pursuant to fee-based rates that will be applied to the volumes transported, which was effective through December 31, 2010. Effective January 1, 2011, we entered into a 10-year dedication and transportation agreement with a subsidiary of DCP Midstream, LLC whereby certain NGL volumes produced at several of DCP Midstream, LLC's processing facilities are dedicated for transportation on the Wattenberg pipeline. We collect fee-based transportation revenues under our tariff. We generally report revenues associated with these activities in the condensed consolidated statements of operations as transportation, processing and other to affiliates.

In conjunction with our acquisition of our DJ Basin NGL Fractionators in our NGL Logistics segment, we pay a fee to DCP Midstream, LLC to operate our DJ Basin NGL Fractionators and receive fees for the processing of DCP Midstream, LLC's committed NGLs produced by them in Weld County at our DJ Basin NGL Fractionators under agreements that are effective through March 2018.

DCP Midstream, LLC has issued parental guarantees, totaling $85.0 million as of March 31, 2011, in favor of certain counterparties to our commodity derivative instruments to mitigate a portion of our collateral requirements with those counterparties. We pay DCP Midstream, LLC interest of 0.5% per annum on these outstanding guarantees.

DCP Midstream, LLC has issued parental guarantees for its 49.9% limited liability company interest in East Texas, totaling $6.0 million as of March 31, 2011, in favor of certain counterparties to processing and transportation agreements at East Texas. Concurrently, we issued similar guarantees for our 50.1% interest.

Spectra Energy

We have a propane supply agreements with Spectra Energy, effective through April 2012, which provides us propane supply at our marine terminals, which are included in our Wholesale Propane Logistics segment, for up to approximately 185 million gallons of propane annually. Additionally, we have transportation agreements with Spectra Energy, effective through January 2012, which provide natural gas transportation to our Pelico system in our Natural Gas Services segment, for approximately 35 MMcf/d.

ConocoPhillips

We have multiple agreements with ConocoPhillips and its affiliates. The agreements include fee-based and percent-of-proceeds gathering and processing arrangements, and gas purchase and gas sales agreements. We anticipate continuing to purchase from and sell to ConocoPhillips and its affiliates in the ordinary course of business. In addition, we may be reimbursed by ConocoPhillips for certain capital projects where the work is performed by us. We did not receive any capital reimbursements during the three months ended March 31, 2011 or 2010.

Summary of Transactions with Affiliates

The following table summarizes transactions with affiliates:


	Three Months Ended March 31,
	2011		2010
	(Millions)
DCP Midstream, LLC:
Sales of natural gas, propane, NGLs and condensate	$	131.1	$	133.6
Transportation, processing and other	$	3.2	$	3.8
Purchases of natural gas, propane and NGLs	$	63.0	$	62.8
Losses from commodity derivative activity, net	$	1.3	$	—
General and administrative expense	$	4.7	$	4.8
Interest expense	$	—	$	0.1
Spectra Energy:
Purchases of natural gas, propane and NGLs	$	85.2	$	74.1
ConocoPhillips:
Sales of natural gas, propane, NGLs and condensate	$	1.1	$	1.4
Transportation, processing and other	$	1.9	$	1.9
Purchases of natural gas, propane and NGLs	$	1.4	$	2.0
General and administrative expense	$	0.1	$	0.1
Unconsolidated affiliates:
Purchases of natural gas, propane and NGLs	$	3.1	$	2.4

We had balances with affiliates as follows:


	March 31, 2011			December 31, 2010
	(Millions)
DCP Midstream, LLC:
Accounts receivable	$	67.2		$	60.1
Accounts payable	$	27.7		$	27.0
Unrealized gains on derivative instruments — current	$	—		$	1.3
Unrealized losses on derivative instruments — current	$	(1.2	)	$	(1.8	)
Spectra Energy:
Accounts payable	$	2.2		$	8.7
ConocoPhillips:
Accounts receivable	$	2.2		$	1.6
Accounts payable	$	0.5		$	1.0
Unconsolidated affiliates:
Accounts payable	$	0.7		$	0.9

Property, Plant and Equipment

3 Months Ended

Mar. 31, 2011

Property, Plant and Equipment

Property, Plant and Equipment

5. Property, Plant and Equipment

A summary of property, plant and equipment by classification is as follows:


	Depreciable Life	March 31, 2011			December 31, 2010
		(Millions)
Gathering and transmission systems	15 — 30 Years	$	994.1		$	992.0
Processing, storage, and terminal facilities	20 — 50 Years		543.0			513.2
Other	0 — 30 Years		14.7			12.6
Construction work in progress			50.7			42.1

Property, plant and equipment			1,602.5			1,559.9
Accumulated depreciation			(481.9	)		(462.8	)

Property, plant and equipment, net		$	1,120.6		$	1,097.1

Interest capitalized on construction projects for the three months ended March 31, 2011 was $0.2 million and for the year ended December 31, 2010 was $0.2 million.

Depreciation expense was $18.4 million and $17.0 million for the three months ended March 31, 2011 and 2010, respectively.

Asset Retirement Obligations — As of March 31, 2011, we had asset retirement obligations of $10.9 million included in other long-term liabilities in the consolidated balance sheets. As of December 31, 2010, we had asset retirement obligations of $10.8 million included in other long-term liabilities in the consolidated balance sheets. Accretion expense for the three months ended March 31, 2011 and 2010 was $0.2 million and $0.1 million, respectively.

Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2011

Goodwill and Intangible Assets

Goodwill and Intangible Assets

6. Goodwill and Intangible Assets

The change in the carrying amount of goodwill is as follows:


	March 31,		December 31,
	2011		2010
	(Millions)
Beginning of period	$	139.3	$	92.1
Acquisitions		7.5		47.2

End of period	$	146.8	$	139.3

The carrying value of goodwill as of March 31, 2011 and December 31, 2010 was $70.3 million and $62.8 million, respectively, for our Natural Gas Services segment, $36.9 million as of both periods for our Wholesale Propane Logistics segment, and $39.6 million as of both periods for our NGL logistics segment.

Goodwill increased in 2011 by $7.5 million as a result of a purchase price adjustment related to a contingent payment in conjunction with our 2008 Michigan System acquisition.

Intangible assets consist of customer contracts, including commodity purchase, transportation and processing contracts, and related relationships. The gross carrying amount and accumulated amortization of these intangible assets are included in the accompanying consolidated balance sheets as intangible assets, net, and are as follows:


	March 31,			December 31,
	2011			2010
	(Millions)
Gross carrying amount	$	128.7		$	128.7
Accumulated amortization		(10.9	)		(9.4	)

Intangible assets, net	$	117.8		$	119.3

For the three months ended March 31, 2011 and 2010, we recorded amortization expense of $1.5 million and $0.8 million, respectively. As of March 31, 2011, the remaining amortization periods ranged from approximately 11 years to 24 years, with a weighted-average remaining period of approximately 20 years.

The weighted-average remaining amortization is 20 years for the $32.3 million of intangible assets acquired with our acquisition of Marysville.

Estimated future amortization for these intangible assets is as follows:


	Estimated Future Amortization
	(Millions)
Remainder of 2011	$	4.6
2012		6.0
2013		6.0
2014		6.0
2015		6.0
Thereafter		89.2

Total	$	117.8

- Definition

Discloses the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain or loss on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. This element may be used as a single block of text to include the entire intangible asset disclosure including data and tables.

+ References+ Details

Investments in Unconsolidated Affiliates

3 Months Ended

Mar. 31, 2011

Investments in Unconsolidated Affiliates

Investments in Unconsolidated Affiliates

7. Investments in Unconsolidated Affiliates

The following table summarizes our investments in unconsolidated affiliates:


	Percentage of Ownership as of			Carrying Value as of
	March 31, 2011 and December 31, 2010			March 31, 2011		December 31, 2010
				(Millions)
Discovery Producer Services LLC		40	%	$	103.0	$	104.1
Southeast Texas		33	%		112.8		112.6
Other		50	%		0.2		0.2

Total investments in unconsolidated affiliates				$	216.0	$	216.9

There was a deficit between the carrying amount of the investment and the underlying equity of Discovery of $34.5 million and $35.1 million at March 31, 2011 and December 31, 2010, respectively, which is associated with, and is being accreted over, the life of the underlying long-lived assets of Discovery.

Earnings from investments in unconsolidated affiliates were as follows:


	Three Months Ended March 31,
	2011		2010
	(Millions)
Discovery Producer Services LLC	$	4.5	$	7.4
Southeast Texas		4.1		6.5
Black Lake Pipe Line Company (a)		—		0.5

Total earnings from unconsolidated affiliates	$	8.6	$	14.4

(a)

As of March 31, 2010, we owned a 45% interest in Black Lake. On July 27, 2010, we acquired an additional 5% interest in Black Lake from DCP Midstream, LLC in a transaction among entities under common control, and on July 30, 2010, we acquired an additional 50% interest in Black Lake from an affiliate of BP PLC, bringing our ownership interest in Black Lake to 100%. Prior to our acquisition of an additional 50% interest in Black Lake, we accounted for Black Lake under the equity method of accounting. Subsequent to this transaction, we account for Black Lake as a consolidated subsidiary.

The following summarizes combined financial information of our investments in unconsolidated affiliates:


	Three Months Ended March 31,
	2011 (a)		2010 (b)
	(Millions)
Statements of operations:
Operating revenue	$	259.9	$	302.7
Operating expenses	$	240.1	$	264.7
Net income	$	19.6	$	37.9

(a)	The combined financial information excludes the results of Black Lake, since we began accounting for Black Lake as a consolidated subsidiary effective July 30, 2010.

(b)

The combined financial information for the three months ended March 31, 2010 includes the results of Southeast Texas as transfers of net assets between entities under common control are accounted for as if the transfer occurred at the beginning of the period, and prior years are retrospectively adjusted to furnish comparative information similar to the pooling method.


	March 31, 2011 (a)			December 31, 2010 (a) (b)
	(Millions)
Balance sheets:
Current assets	$	104.8		$	153.0
Long-term assets	$	693.6			684.9
Current liabilities	$	(83.8	)		(121.4	)
Long-term liabilities	$	(29.4	)		(30.3	)

Net assets	$	685.2		$	686.2

(a)	The combined financial information excludes the results of Black Lake, since we began accounting for Black Lake as a consolidated subsidiary effective July 30, 2010.

(b)

- Definition

Equity investment disclosure, or group of investments for which combined disclosure is appropriate, including: (a) the name of each investee and percentage of ownership of common stock, (b) accounting policies for investments in common stock, (c) difference between the amount at which the investment is carried and the amount of underlying equity in net assets and the accounting treatment of the difference, (d) the total fair value of each identified investment for which a market value is available, (e) summarized information as to assets, liabilities, and results of operations of the investees (for investments in unconsolidated subsidiaries, common stock of joint ventures, or other investments using the equity method), and (f) material effects of possible conversions, exercises, or contingent issuances of the investee. Other disclosures include (a) the names of any investee in which the investor owns 20 percent or more of the voting stock and investment is not accounted for using the equity method, and the reasons why not, and (b) the names of any investee in which the investor owns less than 20% of the voting stock and the investment is accounted for using the equity method, and the reasons why it is.

+ References+ Details

Fair Value Measurement

3 Months Ended

Mar. 31, 2011

Fair Value Measurement

Fair Value Measurement

8. Fair Value Measurement

Determination of Fair Value

Below is a general description of our valuation methodologies for derivative financial assets and liabilities which are measured at fair value. Fair values are generally based upon quoted market prices, where available. If listed market prices or quotes are not available, we determine fair value based upon a market quote, adjusted by other market-based or independently sourced market data such as historical commodity volatilities, crude oil future yield curves, and/or counterparty specific considerations. These adjustments result in a fair value for each asset or liability under an "exit price" methodology, in line with how we believe a marketplace participant would value that asset or liability. These adjustments may include amounts to reflect counterparty credit quality, the effect of our own creditworthiness, the time value of money and/or the liquidity of the market.

•

Counterparty credit valuation adjustments are necessary when the market price of an instrument is not indicative of the fair value as a result of the credit quality of the counterparty. Generally, market quotes assume that all counterparties have near zero, or low, default rates and have equal credit quality. Therefore, an adjustment may be necessary to reflect the credit quality of a specific counterparty to determine the fair value of the instrument. We record counterparty credit valuation adjustments on all derivatives that are in a net asset position as of the measurement date in accordance with our established counterparty credit policy, which takes into account any collateral margin that a counterparty may have posted with us as well as any letters of credit that they have provided.

•

Entity valuation adjustments are necessary to reflect the effect of our own credit quality on the fair value of our net liability position with each counterparty. This adjustment takes into account any credit enhancements, such as collateral margin we may have posted with a counterparty, as well as any letters of credit that we have provided. The methodology to determine this adjustment is consistent with how we evaluate counterparty credit risk, taking into account our own credit rating, current credit spreads, as well as any change in such spreads since the last measurement date.

•

Liquidity valuation adjustments are necessary when we are not able to observe a recent market price for financial instruments that trade in less active markets for the fair value to reflect the cost of exiting the position. Exchange traded contracts are valued at market value without making any additional valuation adjustments and, therefore, no liquidity reserve is applied. For contracts other than exchange traded instruments, we mark our positions to the midpoint of the bid/ask spread, and record a liquidity reserve based upon our total net position. We believe that such practice results in the most reliable fair value measurement as viewed by a market participant.

We manage our derivative instruments on a portfolio basis and the valuation adjustments described above are calculated on this basis. We believe that the portfolio level approach represents the highest and best use for these assets as there are benefits inherent in naturally offsetting positions within the portfolio at any given time, and this approach is consistent with how a market participant would view and value the assets and liabilities. Although we take a portfolio approach to managing these assets/liabilities, in order to reflect the fair value of any one individual contract within the portfolio, we allocate all valuation adjustments down to the contract level, to the extent deemed necessary, based upon either the notional contract volume, or the contract value, whichever is more applicable.

The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While we believe that our valuation methods are appropriate and consistent with other market participants, we recognize that the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. We review our fair value policies on a regular basis taking into consideration changes in the marketplace and, if necessary, will adjust our policies accordingly. See Note 10 Risk Management and Hedging Activities.

Valuation Hierarchy

Our fair value measurements are grouped into a three-level valuation hierarchy. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The three levels are defined as follows.

•

Level 1 — inputs are unadjusted quoted prices for identical assets or liabilities in active markets.

•

Level 2 — inputs include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

•

Level 3 — inputs are unobservable and considered significant to the fair value measurement.

A financial instrument's categorization within the hierarchy is based upon the input that requires the highest degree of judgment in the determination of the instrument's fair value. Following is a description of the valuation methodologies used as well as the general classification of such instruments pursuant to the hierarchy.

Commodity Derivative Assets and Liabilities

We enter into a variety of derivative financial instruments, which may include over the counter, or OTC, instruments, such as natural gas, crude oil or NGL contracts.

Within our Natural Gas Services segment we typically use OTC derivative contracts in order to mitigate a portion of our exposure to natural gas, NGL and condensate price changes. We also may enter into natural gas derivatives to lock in margin around our storage and transportation assets. These instruments are generally classified as Level 2. Depending upon market conditions and our strategy, we may enter into OTC derivative positions with a significant time horizon to maturity, and market prices for these OTC derivatives may only be readily observable for a portion of the duration of the instrument. In order to calculate the fair value of these instruments, readily observable market information is utilized to the extent that it is available; however, in the event that readily observable market data is not available, we may interpolate or extrapolate based upon observable data. In instances where we utilize an interpolated or extrapolated value, and it is considered significant to the valuation of the contract as a whole, we would classify the instrument within Level 3.

Within our Wholesale Propane Logistics segment, we may enter into a variety of financial instruments to either secure sales or purchase prices, or capture a variety of market opportunities. Since financial instruments for NGLs tend to be counterparty and location specific, we primarily use the OTC derivative instrument markets, which are not as active and liquid as exchange traded instruments. Market quotes for such contracts may only be available for short dated positions (up to six months), and an active market itself may not exist beyond such time horizon. Contracts entered into with a relatively short time horizon for which prices are readily observable in the OTC market are generally classified within Level 2. Contracts with a longer time horizon, for which we internally generate a forward curve to value such instruments, are generally classified within Level 3. The internally generated curve may utilize a variety of assumptions including, but not limited to, historical and future expected relationship of NGL prices to crude oil prices, the knowledge of expected supply sources coming on line, expected weather trends within certain regions of the United States, and the future expected demand for NGLs.

Each instrument is assigned to a level within the hierarchy at the end of each financial quarter depending upon the extent to which the valuation inputs are observable. Generally, an instrument will move toward a level within the hierarchy that requires a lower degree of judgment as the time to maturity approaches, and as the markets in which the asset trades will likely become more liquid and prices more readily available in the market, thus reducing the need to rely upon our internally developed assumptions. However, the level of a given instrument may change, in either direction, depending upon market conditions and the availability of market observable data.

Interest Rate Derivative Assets and Liabilities

We use interest rate swap agreements as part of our overall capital strategy. These instruments effectively exchange a portion of our floating rate debt for fixed rate debt. The swaps are generally priced based upon a London Interbank Offered Rate, or LIBOR, instrument with similar duration, adjusted by the credit spread between our company and the LIBOR instrument. Given that a portion of the swap value is derived from the credit spread, which may be observed by comparing similar assets in the market, these instruments are classified within Level 2. Default risk on either side of the swap transaction is also considered in the valuation. We record counterparty credit and entity valuation adjustments in the valuation of our interest rate swaps; however, these reserves are not considered to be a significant input to the overall valuation.

Nonfinancial Assets and Liabilities

We utilize fair value on a non-recurring basis to perform impairment tests as required on our property, plant and equipment, goodwill and intangible assets. Assets and liabilities acquired in business combinations are recorded at their fair value as of the date of acquisition. The inputs used to determine such fair value are primarily based upon internally developed cash flow models and would generally be classified within Level 3, in the event that we were required to measure and record such assets at fair value within our condensed consolidated financial statements. Additionally, we use fair value to determine the inception value of our asset retirement obligations. The inputs used to determine such fair value are primarily based upon costs incurred historically for similar work, as well as estimates from independent third parties for costs that would be incurred to restore leased property to the contractually stipulated condition, and would generally be classified within Level 3.

We utilize fair value on a recurring basis to measure our contingent consideration that is a result of certain acquisitions. The inputs used to determine such fair value are primarily based upon internally developed cash flow models and are classified within Level 3.

The following table presents the financial instruments carried at fair value as of March 31, 2011 and December 31, 2010, by consolidated balance sheet caption and by valuation hierarchy as described above:


	March 31, 2011											December 31, 2010
	Level 1		Level 2			Level 3			Total Carrying Value			Level 1		Level 2			Level 3			Total Carrying Value
	(Millions)
Current assets:
Commodity derivatives (a)	$	—	$	0.7		$	0.2		$	0.9		$	—	$	1.6		$	0.3		$	1.9
Long-term assets:
Commodity derivatives (b)	$	—	$	2.9		$	0.2		$	3.1		$	—	$	1.1		$	0.3		$	1.4
Current liabilities (c):
Commodity derivatives	$	—	$	(35.0	)	$	(2.3	)	$	(37.3	)	$	—	$	(25.9	)	$	(0.1	)	$	(26.0	)
Interest rate derivatives	$	—	$	(17.0	)	$	—		$	(17.0	)	$	—	$	(17.0	)	$	—		$	(17.0	)
Long-term liabilities (d):
Commodity derivatives	$	—	$	(61.0	)	$	(2.4	)	$	(63.4	)	$	—	$	(39.9	)	$	(0.5	)	$	(40.4	)
Interest rate derivatives	$	—	$	(5.8	)	$	—		$	(5.8	)	$	—	$	(9.9	)	$	—		$	(9.9	)

(a)	Included in current unrealized gains on derivative instruments in our condensed consolidated balance sheets.

(b)	Included in long-term unrealized gains on derivative instruments in our condensed consolidated balance sheets.

(c)	Included in current unrealized losses on derivative instruments in our condensed consolidated balance sheets.

(d)	Included in long-term unrealized losses on derivative instruments in our condensed consolidated balance sheets.

Changes in Level 3 Fair Value Measurements

The tables below illustrate a rollforward of the amounts included in our condensed consolidated balance sheets for derivative financial instruments that we have classified within Level 3. The determination to classify a financial instrument within Level 3 is based upon the significance of the unobservable factors used in determining the overall fair value of the instrument. Since financial instruments classified as Level 3 typically include a combination of observable components (that is, components that are actively quoted and can be validated to external sources) and unobservable components, the gains and losses in the table below may include changes in fair value due in part to observable market factors, or changes to our assumptions on the unobservable components. Depending upon the information readily observable in the market, and/or the use of unobservable inputs, which are significant to the overall valuation, the classification of any individual financial instrument may differ from one measurement date to the next. In the event that there is a movement to/from the classification of an instrument as Level 3, we have reflected such items in the table below within the "Transfers in/out of Level 3" caption.

We manage our overall risk at the portfolio level, and in the execution of our strategy, we may use a combination of financial instruments, which may be classified within any level. Since Level 1 and Level 2 risk management instruments are not included in the rollforward below, the gains or losses in the table do not reflect the effect of our total risk management activities.


	Commodity Derivative Instruments
	Current Assets			Long-Term Assets			Current Liabilities			Long-Term Liabilities
	(Millions)
Three months ended March 31, 2011 (a):
Beginning balance	$	0.3		$	0.3		$	(0.1	)	$	(0.5	)
Net realized and unrealized losses included in earnings		—			(0.1	)		(2.2	)		(1.9	)
Transfers into Level 3 (b)		—			—			—			—
Transfers out of Level 3 (b)		—			—			—			—
Settlements		(0.1	)		—			—			—

Ending balance	$	0.2		$	0.2		$	(2.3	)	$	(2.4	)

Net unrealized losses still held included in earnings (c)	$	—		$	(0.1	)	$	(2.2	)	$	(1.9	)

Three months ended March 31, 2010:
Beginning balance	$	0.4		$	0.2		$	(0.8	)	$	(0.4	)
Net realized and unrealized (losses) gains included in earnings		1.2			1.0			(0.1	)		—
Transfers into Level 3 (b)		—			—			—			—
Transfers out of Level 3 (b)		—			—			—			—
Purchases, Issuances and Settlements net		(0.1	)		—			0.6			—

Ending balance	$	1.5		$	1.2		$	(0.3	)	$	(0.4	)

Net unrealized gains still held included in earnings (c)	$	1.2		$	1.0		$	0.4		$	—

(a)	There were no purchases, issuances and sales for the three months ended March 31, 2011.

(b)	Amounts transferred in and amounts transferred out are reflected at fair value as of the end of the period.

(c)	Represents the amount of total gains or losses for the period, included in gains or losses from commodity derivative activity, net, attributable to change in unrealized gains or losses relating to assets and liabilities classified as Level 3 that are still held as of March 31, 2011 and 2010.

During the three months ended March 31, 2010, we recognized the fair value of our contingent consideration, which is classified as Level 3, in relation to our acquisition of an additional 5% interest in Collbran, from Delta Petroleum Corporation of approximately $1.0 million, which we recorded to other current liabilities in our condensed consolidated balance sheets.

During the three months ended March 31, 2011, we had no significant transfers into and out of Levels 1, 2 and 3. To qualify as a transfer, the asset or liability must have existed in the previous reporting period and moved into a different level during the current period.

Estimated Fair Value of Financial Instruments

We have determined fair value amounts using available market information and appropriate valuation methodologies. However, considerable judgment is required in interpreting market data to develop the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that we could realize in a current market exchange. The use of different market assumptions and/or estimation methods may have a material effect on the estimated fair value amounts.

The fair value of accounts receivable and accounts payable are not materially different from their carrying amounts because of the short-term nature of these instruments or the stated rates approximating market rates. Unrealized gains and unrealized losses on derivative instruments are carried at fair value. The carrying and fair values of outstanding balances under our Credit Agreement are $426.0 million, and $419.4 million, respectively, as of March 31, 2011, and $398.0 million and $388.9 million, respectively, as of December 31, 2010. The carrying and fair values of our 3.25% Senior Notes are $250.0 million and $246.0 million, respectively, as of March 31, 2011 and $250.0 million and $247.0 million, respectively, as of December 31, 2010. We determine the fair value of our credit facility borrowings based upon the discounted present value of expected future cash flows, taking into account the difference between the contractual borrowing spread and the spread for similar credit facilities available in the marketplace. We determine the fair value of our fixed rate debt based on quotes obtained from bond dealers.

- Definition

This item represents the complete disclosure regarding the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the Company is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risk is are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References+ Details

Debt

3 Months Ended

Mar. 31, 2011

Debt

Debt

9. Debt

Long-term debt was as follows:


	March 31, 2011			December 31, 2010
	(Millions)
*Credit Agreement*
Revolving credit facility, weighted-average variable interest rate of 0.73% and 1.14%, respectively, and net effective interest rate of 4.61% and 4.28%, respectively, due June 21, 2012 (a)	$	426.0		$	398.0
*Debt Securities*
Issued September 30, 2010, interest at 3.25% payable semi-annually, due October 1, 2015		250.0			250.0
Unamortized discount		(0.2	)		(0.2	)

Total long-term debt	$	675.8		$	647.8

(a)	$425.0 million of debt has been swapped to a fixed rate obligation with effective fixed rates ranging from 2.94% to 5.19%, for a net effective rate of 4.61% on the $426.0 million of outstanding debt under our revolving credit facility as of March 31, 2011.

Credit Agreement

We have an $850.0 million revolving credit facility that matures June 21, 2012, or the Credit Agreement.

At March 31, 2011 and December 31, 2010, we had $0.5 million and $32.1 million, respectively, of letters of credit issued and outstanding under the Credit Agreement. As of March 31, 2011, the unused capacity under the revolving credit facility was $423.5 million, of which approximately $365.0 million was available for general working capital purposes.

Our borrowing capacity is limited at March 31, 2011 by the Credit Agreement's financial covenant requirements. Except in the case of a default, amounts borrowed under our credit facility will not mature prior to the June 21, 2012 maturity date.

Under the Credit Agreement, indebtedness under the revolving credit facility bears interest at either: (1) the higher of Wells Fargo Bank's prime rate or the Federal Funds rate plus 0.50%; or (2) LIBOR plus an applicable margin, which ranges from 0.23% to 0.575% dependent upon our credit rating. The revolving credit facility incurs an annual facility fee of 0.07% to 0.175% depending on our credit rating. This fee is paid on drawn and undrawn portions of the revolving credit facility.

The Credit Agreement requires us to maintain a leverage ratio (the ratio of our consolidated indebtedness to our consolidated EBITDA, in each case as is defined by the Credit Agreement) of not more than 5.0 to 1.0, and on a temporary basis for not more than three consecutive quarters (including the quarter in which such acquisition is consummated) following the consummation of asset acquisitions in the midstream energy business of not more than 5.5 to 1.0.

Debt Securities

On September 30, 2010, we issued $250.0 million of 3.25% Senior Notes due October 1, 2015. We received proceeds, of $247.7 million, which are net of underwriters' fees, related expenses and unamortized discounts of $1.5 million, $0.6 million and $0.2 million, respectively, which we used to repay funds borrowed under the revolver portion of our Credit Facility. Interest on the notes will be paid semi-annually on April 1 and October 1 of each year, commencing April 1, 2011. The notes will mature on October 1, 2015, unless redeemed prior to maturity. The underwriters' fees and related expenses are deferred in other long-term assets in our condensed consolidated balance sheets and will be amortized over the term of the notes.

The notes are senior unsecured obligations, ranking equally in right of payment with other unsecured indebtedness, including indebtedness under our Credit Facility. We are not required to make mandatory redemption or sinking fund payments with respect to these notes. The securities are redeemable at a premium at our option.

The future maturities of long-term debt in the year indicated are as follows:


	Debt Maturities
	(Millions)
2011	$	—
2012		426.0
2013		—
2014		—
2015		250.0
Thereafter		—

Unamortized discount		(0.2	)

Total	$	675.8

Other Agreements

As of March 31, 2011, we had a contingent letter of credit for up to $10.0 million, on which we pay a fee of 0.50% per annum. This facility reduces the amount of cash we may be required to post as collateral. As of March 31, 2011, we had no letters of credit issued on this facility. Any letters of credit issued on this facility will incur a fee of 1.75% per annum and will not reduce the available capacity under our credit facility.

Risk Management and Hedging Activities

3 Months Ended

Mar. 31, 2011

Risk Management and Hedging Activities

Risk Management and Hedging Activities

10. Risk Management and Hedging Activities

Our day to day operations expose us to a variety of risks including but not limited to changes in the prices of commodities that we buy or sell, changes in interest rates, and the creditworthiness of each of our counterparties. We manage certain of these exposures with both physical and financial transactions. We have established a comprehensive risk management policy, or Risk Management Policy, and a risk management committee, or the Risk Management Committee, to monitor and manage market risks associated with commodity prices and counterparty credit. The Risk Management Committee is responsible for the overall management of credit risk and commodity price risk, including monitoring exposure limits. The following briefly describes each of the risks that we manage.

Commodity Price Risk

We are exposed to the impact of market fluctuations in the prices of natural gas, NGLs and condensate as a result of our gathering, processing, sales and storage activities. For gathering and processing and storage services, we may receive fees or commodities as payment for these services, depending on the contract type. We enter into derivative financial instruments to mitigate a portion of the risk of weakening natural gas, NGL and condensate prices associated with our gathering, processing and sales activities, thereby stabilizing our cash flows. We have mitigated a portion of our expected commodity price risk associated with our gathering, processing and sales activities through 2016 with commodity derivative instruments. Given the limited liquidity and tenor of the NGL derivatives market, we have primarily utilized crude oil swaps to mitigate a portion of our commodity price exposure for NGLs. For the nearer tenor where there is greater liquidity in the NGL derivatives market, we have periodically also utilized NGL derivatives. Historically, prices of NGLs have been generally related to the price of crude oil, with some exceptions, notably in late 2008 to early 2009, when NGL pricing was at a greater discount to crude oil pricing. When the relationship of NGL prices to crude oil prices is at a discount to historical ranges, we experience additional exposure as a result of the relationship. When our crude oil swaps become short-term in nature, we have periodically converted certain crude oil derivatives to NGL derivatives by entering into offsetting crude oil swaps while adding NGL swaps. Our crude oil and NGL transactions are primarily accomplished through the use of forward contracts that effectively exchange our floating price risk for a fixed price. We also utilize crude oil costless collars that minimize our floating price risk by establishing a fixed price floor and a fixed price ceiling. However, the type of instrument that we use to mitigate a portion of our risk may vary depending upon our risk management objective. These transactions are not designated as hedging instruments for accounting purposes and the change in fair value is reflected within our condensed consolidated statements of operations as a gain or a loss on commodity derivative activity.

With respect to our Pelico system, we may enter into financial derivatives to lock in transportation margins across the system, or to lock in margins around our leased storage facility to maximize value. This objective may be achieved through the use of physical purchases or sales of gas that are accounted for under accrual accounting. While the physical purchase or sale of gas transactions are accounted for under accrual accounting and any inventory is stated at lower of cost or market, the swaps are not designated as hedging instruments for accounting purposes and any change in fair value of these instruments is reflected within our condensed consolidated statements of operations.

Our Wholesale Propane Logistics segment is generally designed to establish stable margins by entering into supply arrangements that specify prices based on established floating price indices and by entering into sales agreements that provide for floating prices that are tied to our variable supply costs plus a margin. To the extent possible, we match the pricing of our supply portfolio to our sales portfolio in order to lock in value and reduce our overall commodity price risk. However, to the extent that we carry propane inventories or our sales and supply arrangements are not aligned, we are exposed to market variables and commodity price risk. We manage the commodity price risk of our supply portfolio and sales portfolio with both physical and financial transactions. While the majority of our sales and purchases in this segment are index-based, occasionally, we may enter into fixed price sales agreements in the event that a retail propane distributor desires to purchase propane from us on a fixed price basis. In such cases, we may manage this risk with derivatives that allow us to swap our fixed price risk to market index prices that are matched to our market index supply costs. In addition, we may on occasion use financial derivatives to manage the value of our propane inventories. These transactions are not designated as hedging instruments for accounting purposes and the change in value is reflected in the current period within our condensed consolidated statements of operations as a gain or loss on commodity derivative activity.

Our portfolio of commodity derivative activity is primarily accounted for using the mark-to-market method of accounting, whereby changes in fair value are recorded directly to the condensed consolidated statements of operations; however, depending upon our risk profile and objectives, in certain limited cases, we may execute transactions that qualify for the hedge method of accounting.

Commodity Cash Flow Hedges — Effective July 1, 2007, we elected to discontinue using the hedge method of accounting for derivatives that manage our commodity price risk. Prior to July 1, 2007, we used commodity swaps to mitigate a portion of the risk of market fluctuations in the price of NGLs, natural gas and condensate. Given our election to discontinue using the hedge method of accounting, the remaining net losses deferred in AOCI relative to cash flow hedges are reclassified to sales of natural gas, propane, NGLs and condensate, through December 2011, as the underlying transactions impact earnings.

Interest Rate Risk

We mitigate a portion of our interest rate risk with interest rate swaps that reduce our exposure to market rate fluctuations by converting variable interest rates to fixed interest rates. These interest rate swap agreements convert the interest rate associated with the indebtedness outstanding under our revolving credit facility to a fixed rate obligation, thereby reducing the exposure to market rate fluctuations.

At March 31, 2011, we had interest rate swap agreements totaling $450 million, of which we have designated $425.0 million as cash flow hedges and account for the remaining $25.0 million under the mark-to-market method of accounting. As we generally expect to have variable rate debt levels equal to or exceeding our swap positions during their term, the entire $450.0 million of these arrangements generally mitigate our interest rate risk through June 2012, with $150 million extending from June 2012 through June 2014. Based on our current operations we believe our interest rate swap agreements adequately mitigate our interest rate risk associated with our variable rate debt.

We have designated $425.0 million of our interest rate swap agreements as cash flow hedges, and effectiveness is determined by matching the principal balance and terms with that of the specified obligation. The effective portions of changes in fair value are recognized in AOCI in the condensed consolidated balance sheets and are reclassified into earnings as the hedged transactions impact earnings. The effect that these swaps have on our condensed consolidated financial statements, as well as the effect that is expected over the upcoming 12 months is summarized in the charts below. However, due to the volatility of the interest rate markets, the corresponding value in AOCI is subject to change prior to its reclassification into earnings. Ineffective portions of changes in fair value are recognized in earnings.

As of March 31, 2011, $275.0 million of the agreements reprice prospectively approximately every 90 days and the remaining $175.0 million of the agreements reprice prospectively approximately every 30 days. Under the terms of the interest rate swap agreements, we pay fixed rates ranging from 2.94% to 5.19%, and receive interest payments based on the three-month and one-month LIBOR. The differences to be paid or received under the interest rate swap agreements are recognized as an adjustment to interest expense.

Contingent Credit Features

Each of the above risks is managed through the execution of individual contracts with a variety of counterparties. Certain of our derivative contracts may contain credit-risk related contingent provisions that may require us to take certain actions in certain circumstances.

We have International Swap Dealers Association, or ISDA, contracts which are standardized master legal arrangements that establish key terms and conditions which govern certain derivative transactions. These ISDA contracts contain standard credit-risk related contingent provisions. Some of the provisions we are subject to are outlined below.

•

If we were to have an effective event of default under our Credit Agreement that occurs and is continuing, our ISDA counterparties may have the right to request early termination and net settlement of any outstanding derivative liability positions.

•

In the event that we or DCP Midstream, LLC were to be downgraded below investment grade by at least one of the major credit rating agencies, certain of our ISDA counterparties have the right to reduce our collateral threshold to zero, potentially requiring us to fully collateralize any commodity contracts in a net liability position.

•

Additionally, in some cases, our ISDA contracts contain cross-default provisions that could constitute a credit-risk related contingent feature. These provisions apply if we default in making timely payments under those agreements and the amount of the default is above certain predefined thresholds, which are significantly high and are generally consistent with the terms of our Credit Agreement. As of March 31, 2011, we are not a party to any agreements that would be subject to these provisions other than our credit agreement.

Our commodity derivative contracts that are not governed by ISDA contracts do not have any credit-risk related contingent features.

Depending upon the movement of commodity prices and interest rates, each of our individual contracts with counterparties to our commodity derivative instruments or to our interest rate swap instruments are in either a net asset or net liability position. As of March 31, 2011, we had $99.4 million of individual commodity derivative contracts that contain credit-risk related contingent features that were in a net liability position, and have not posted any cash collateral relative to such positions. If a credit-risk related event were to occur and we were required to net settle our position with an individual counterparty, our ISDA contracts permit us to net all outstanding contracts with that counterparty, whether in a net asset or net liability position, as well as any cash collateral already posted. As of March 31, 2011, if a credit-risk related event were to occur we may be required to post additional collateral. Additionally, although our commodity derivative contracts that contain credit-risk related contingent features were in a net liability position as of March 31, 2011, if a credit-risk related event were to occur, the net liability position would be partially offset by contracts in a net asset position reducing our net liability to $95.5 million.

As of March 31, 2011, our interest rate swaps were in a net liability position of approximately $22.8 million, of which, the entire amount is subject to credit-risk related contingent features. If we were to have a default of any of our covenants to our Credit Agreement, that occurs and is continuing, the counterparties to our swap instruments have the right to request that we net settle the instrument in the form of cash.

Collateral

As of March 31, 2011, we had a contingent letter of credit facility for up to $10.0 million, on which we have no letters of credit issued. DCP Midstream, LLC had issued and outstanding parental guarantees totaling $85 million in favor of certain counterparties to our commodity derivative instruments. This contingent letter of credit facility and the parental guarantees reduce the amount of cash we may be required to post as collateral. As of March 31, 2011, we had no cash collateral posted with counterparties to our commodity derivative instruments.

Summarized Derivative Information

The following summarizes the balance within AOCI relative to our commodity and interest rate cash flow hedges:


	March 31, 2011			December 31, 2010
	(Millions)
Commodity cash flow hedges:
Net deferred losses in AOCI	$	(0.2	)	$	(0.3	)
Interest rate cash flow hedges:
Net deferred losses in AOCI		(23.1	)		(27.4	)

Total AOCI	$	(23.3	)	$	(27.7	)

The fair value of our derivative instruments that are designated as hedging instruments, those that are marked-to-market each period, as well as the location of each within our condensed consolidated balance sheets, by major category, is summarized as follows:


Balance Sheet Line Item	March 31, 2011		December 31, 2010		Balance Sheet Line Item	March 31, 2011			December 31, 2010
	(Millions)					(Millions)
Derivative Assets Designated as Hedging Instruments:					Derivative Liabilities Designated as Hedging Instruments:

Interest rate derivatives:					Interest rate derivatives:
Unrealized gains on derivative instruments — current	$	—	$	—	Unrealized losses on derivative instruments — current	$	(16.1	)	$	(12.2	)
Unrealized gains on derivative instruments — long-term		—		—	Unrealized losses on derivative instruments — long-term		(5.6	)		(5.4	)

	$	—	$	—		$	(21.7	)	$	(17.6	)


Derivative Assets Not Designated as Hedging Instruments:					Derivative Liabilities Not Designated as Hedging Instruments:

Commodity derivatives:					Commodity derivatives:
Unrealized gains on derivative instruments — current	$	0.9	$	1.9	Unrealized losses on derivative instruments — current	$	(37.3	)	$	(26.0	)
Unrealized gains on derivative instruments — long-term		3.1		1.4	Unrealized losses on derivative instruments — long-term		(63.4	)		(40.4	)

	$	4.0	$	3.3		$	(100.7	)	$	(66.4	)


Interest rate derivatives:					Interest rate derivatives:
Unrealized gains on derivative instruments — current	$	—	$	—	Unrealized losses on derivative instruments — current	$	(0.9	)	$	(4.8	)
Unrealized gains on derivative instruments — long-term		—		—	Unrealized losses on derivative instruments — long-term		(0.2	)		(4.5	)

	$	—	$	—		$	(1.1	)	$	(9.3	)

The following table summarizes the impact on our condensed consolidated balance sheet and condensed consolidated statements of operations of our derivative instruments that are accounted for using the cash flow hedge method of accounting.


	Loss Recognized in AOCI on Derivatives — Effective Portion						Loss Reclassified From AOCI to Earnings — Effective Portion						Gain (Loss) Recognized in Income on Derivatives — Ineffective Portion and Amount Excluded From Effectiveness Testing					Deferred Losses in AOCI Expected to be Reclassified into Earnings
	Three Months Ended March 31,																	Over the Next
	2011			2010			2011			2010			2011		2010			12 Months
	(Millions)						(Millions)						(Millions)					(Millions)
Interest rate derivatives	$	(0.9	)	$	(7.6	)	$	(5.2	)	$	(5.6	)(a)	$	—	$	—	(a)(c)	$	(19.0	)
Commodity derivatives	$	—		$	—		$	(0.1	)	$	(0.4	)(b)	$	—	$	—	(b)(c)	$	(0.2	)

(a)	Included in interest expense in our condensed consolidated statements of operations.

(b)	Included in sales of natural gas, propane, NGLs and condensate in our condensed consolidated statements of operations.

(c)	For the three months ended March 31, 2011 and 2010, no derivative gains or losses were reclassified from AOCI to current period earnings as a result of the discontinuance of cash flow hedges related to certain forecasted transactions that are not probable of occurring.

Changes in value of derivative instruments, for which the hedge method of accounting has not been elected from one period to the next, are recorded in the condensed consolidated statements of operations. The following summarizes these amounts and the location within the condensed consolidated statements of operations that such amounts are reflected:


Commodity Derivatives: Statements of Operations Line Item	Three Months Ended March 31,
	2011			2010
Third party:	(Millions)
Realized	$	(6.0	)	$	(2.1	)
Unrealized		(32.9	)		8.1

(Losses) gains from commodity derivative activity, net	$	(38.9	)	$	6.0

Affiliates:
Realized	$	(0.6	)	$	(0.1	)
Unrealized		(0.7	)		0.1

Losses from commodity derivative activity, net — affiliates	$	(1.3	)	$	—


Interest Rate Derivatives: Statements of Operations Line Item	Three Months Ended March 31,
	2011			2010
Third party:	(Millions)
Realized	$	(1.0	)	$	—
Unrealized	$	1.6		$	—

Interest gain	$	0.6		$	—

We do not have any derivative financial instruments that qualify as a hedge of a net investment.

The following tables represent, by commodity type, our net long or short positions that are expected to partially or entirely settle in each respective year. To the extent that we have long dated derivative positions that span multiple calendar years, the contract will appear in more than one line item in the tables below.


	March 31, 2011
	Crude Oil			Natural Gas			Natural Gas Liquids
Year of Expiration	Net Long (Short) Position (Bbls)			Net Long (Short) Position (MMBtu)			Net Long (Short) Position (Bbls)
2011		(442,505	)		(1,165,000	)		(716,303	)
2012		(1,038,762	)		(366,000	)		—
2013		(948,365	)		(365,000	)		—
2014		(547,500	)		(365,000	)		—
2015		(365,000	)		—			—
2016		(183,000	)		—			—

	March 31, 2010
	Crude Oil			Natural Gas			Natural Gas Liquids
Year of Expiration	Net Long (Short) Position (Bbls)			Net Long (Short) Position (MMBtu)			Net Long (Short) Position (Bbls)
2010		(732,875	)		(1,840,000	)		(440,000	)
2011		(949,000	)		(1,496,500	)		—
2012		(777,750	)		(1,500,600	)		—
2013		(748,250	)		(730,000	)		—
2014		(365,000	)		—			—

We periodically enter into interest rate swap agreements to mitigate a portion of our floating rate interest exposure. As of March 31, 2011, we have swaps with a notional value between $25.0 million and $80.0 million, which, in aggregate, exchange up to $450.0 million of our floating rate obligation to a fixed rate obligation through June 2012, with $150.0 million extending from June 2012 through June 2014.

Partnership Equity and Distributions

3 Months Ended

Mar. 31, 2011

Partnership Equity and Distributions

Partnership Equity And Distributions

11. Partnership Equity and Distributions

General — Our partnership agreement requires that, within 45 days after the end of each quarter, we distribute all of our Available Cash, as defined below, to unitholders of record on the applicable record date, as determined by our general partner.

In March 2011, we issued 3,596,636 common limited partner units at $40.55 per unit. We received proceeds of $139.7 million, net of offering costs.

In February 2011, we issued 8,399 common limited partner units, from our long-term incentive plan, or LTIP, to employees as compensation for their service during 2010, 2009 and 2008.

In November 2010, we issued 2,875,000 common limited partner units at $34.96 per unit. We received proceeds of $96.2 million, net of offering costs.

In September 2010, we issued 5,200 common limited partner units, from our LTIP to non-employee directors as compensation for their service during 2010.

In August 2010, we issued 2,990,000 common limited partner units at $32.57 per unit. We received proceeds of $93.1 million, net of offering costs.

On May 26, 2010, we filed a universal shelf registration statement on Form S-3 with the SEC with a maximum aggregate offering price of $1.5 billion, to replace an existing shelf registration statement. The universal shelf registration statement will allow us to register and issue additional partnership units and debt securities.

Definition of Available Cash — Available Cash, for any quarter, consists of all cash and cash equivalents on hand at the end of that quarter:

•

less the amount of cash reserves established by the general partner to:

•

provide for the proper conduct of our business;

•

comply with applicable law, any of our debt instruments or other agreements; and

•

provide funds for distributions to the unitholders and to our general partner for any one or more of the next four quarters;

•

plus, if our general partner so determines, all or a portion of cash and cash equivalents on hand on the date of determination of Available Cash for the quarter.

General Partner Interest and Incentive Distribution Rights — The general partner is entitled to a percentage of all quarterly distributions equal to its general partner interest of approximately 1% and limited partner interest of 1% as of March 31, 2011. The general partner has the right, but not the obligation, to contribute a proportionate amount of capital to us to maintain its current general partner interest.

The incentive distribution rights held by the general partner entitle it to receive an increasing share of Available Cash when pre-defined distribution targets are achieved. Currently, our distribution to our general partner related to its incentive distribution rights is at the highest level. The general partner's incentive distribution rights were not reduced as a result of our common limited partner unit issuances, and will not be reduced if we issue additional units in the future and the general partner does not contribute a proportionate amount of capital to us to maintain its current general partner interest. Please read the Distributions of Available Cash after the Subordination Period sections below for more details about the distribution targets and their impact on the general partner's incentive distribution rights.

Distributions of Available Cash after the Subordination Period — Our partnership agreement, after adjustment for the general partner's relative ownership level, requires that we make distributions of Available Cash from operating surplus for any quarter after the subordination period, which ended in February 2009, in the following manner:

•

first, to all unitholders and the general partner, in accordance with their pro rata interest, until each unitholder receives a total of $0.4025 per unit for that quarter;

•

second, 13% to the general partner, plus the general partner's pro rata interest, and the remainder to all unitholders pro rata until each unitholder receives a total of $0.4375 per unit for that quarter;

•

third, 23% to the general partner, plus the general partner's pro rata interest, and the remainder to all unitholders pro rata until each unitholder receives a total of $0.525 per unit for that quarter; and

•

thereafter, 48% to the general partner, plus the general partner's pro rata interest, and the remainder to all unitholders.

The following table presents our cash distributions paid in 2011 and 2010:


Payment Date	Per Unit Distribution		Total Cash Distribution
			(Millions)
February 14, 2011	$	0.6175	$	30.0
November 12, 2010	$	0.610	$	27.4
August 13, 2010	$	0.610	$	25.3
May 14, 2010	$	0.600	$	24.6
February 12, 2010	$	0.600	$	24.6

Equity-Based Compensation	3 Months Ended
Equity-Based Compensation	Mar. 31, 2011
Equity-Based Compensation
Equity-Based Compensation	12. Equity-Based Compensation On November 28, 2005, the board of directors of our General Partner adopted a long-term incentive plan, or LTIP, for employees, consultants and directors of our General Partner and its affiliates who perform services for us. The LTIP provides for the grant of limited partner units, or LPUs, phantom units, unit options and substitute awards, and, with respect to unit options and phantom units, the grant of dividend equivalent rights, or DERs. Subject to adjustment for certain events, an aggregate of 850,000 LPUs may be delivered pursuant to awards under the LTIP. Awards that are canceled or forfeited, or are withheld to satisfy the General Partner's tax withholding obligations, are available for delivery pursuant to other awards. The LTIP is administered by the compensation committee of the General Partner's board of directors. All awards are subject to cliff vesting, with the exception of the Phantom Units issued to directors in conjunction with our initial public offering, which are subject to graded vesting provisions. Prior to February 18, 2011, substantially all equity-based awards were accounted for as liability awards. Effective February 18, 2011, the Modification Date, we have the intent and ability to settle certain awards within our control in units and therefore modified the accounting for these awards. We now classify them as equity awards based on their re-measured fair value. The fair value was determined based on the closing price of our common units on the Modification Date. Such modification resulted in a reclassification of $1.9 million from share-based compensation liability to additional paid-in capital on the Modification Date. Compensation expense on unvested equity awards as of the Modification Date will be recognized ratably over each remaining vesting period. We will continue to account for other awards, which are subject to settlement in cash as liability awards. Compensation expense on these awards is recognized ratably over each vesting period, and will be re-measured each reporting period for all awards outstanding until the units are vested. The fair value of all liability awards is determined based on the closing price of our common units at each measurement date. The reclassification of the affected awards does not impact our accounting for dividend equivalent rights as these instruments will continue to be settled in cash and therefore retain their share-based compensation liability classification.

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2011
Income Taxes
Income Taxes	13. Income Taxes We are structured as a master limited partnership, which is a pass-through entity for federal income tax purposes. On December 30, 2010, we acquired all of the interests in Marysville Hydrocarbons Holdings, LLC, an entity that owns a taxable C-Corporation consolidated return group. We estimated $35.0 million of deferred tax liabilities resulting from built-in tax gains recognized in the transaction and recorded this in our preliminary purchase price allocation as of December 31, 2010. On January 4, 2011, we merged two wholly-owned subsidiaries of Marysville Hydrocarbons Holding, LLC and converted the combined entity's organizational structure from a corporation to a limited liability company. This conversion to a limited liability company triggers the deferred tax liabilities resulting from built-in tax gains to become currently payable. Accordingly, the estimated $35.0 million of deferred tax liabilities at December 31, 2010 have been reflected as a current income tax payable in our condensed consolidated balance sheet as of March 31, 2011.

Commitments and Contingent Liabilities	3 Months Ended
Commitments and Contingent Liabilities	Mar. 31, 2011
Commitments and Contingent Liabilities
Commitments and Contingent Liabilities	14. Commitments and Contingent Liabilities *Litigation* — We are a party to various legal proceedings, as well as administrative and regulatory proceedings and commercial disputes that have arisen in the ordinary course of our business. Management currently believes that the ultimate resolution of these matters, taken as a whole, and after consideration of amounts accrued, insurance coverage or other indemnification arrangements, will not have a material adverse effect on our condensed consolidated results of operations, financial position, or cash flows. See Note 17 in Item 8 of our 2010 Form 10-K for additional details. *Insurance* — We renewed our insurance policies in May, June and July 2010 for the 2010-2011 insurance year. We contract with third-party and affiliate insurers for: (1) automobile liability insurance for all owned, non-owned and hired vehicles; (2) general liability insurance; (3) excess liability insurance above the established primary limits for general liability and automobile liability insurance; and (4) property insurance, which covers replacement value of real and personal property and includes business interruption/extra expense. These renewals have not resulted in any material change to the premiums we are contracted to pay in the 2010-2011 insurance year compared with the 2009-2010 insurance year. We are jointly insured with DCP Midstream, LLC for directors and officers insurance covering our directors and officers for acts related to our business activities. All coverage is subject to certain limits and deductibles, the terms and conditions of which are common for companies that are of similar size to us and with similar types of operations. Our insurance on Discovery for the 2010-2011 insurance year covers onshore named windstorm property and business interruption insurance and onshore and offshore non-windstorm property and business interruption insurance. The availability of offshore named windstorm property and business interruption insurance has been significantly reduced over the past two years as a result of higher industry-wide damage claims. Additionally, the named windstorm property and business interruption insurance that is available comes at uneconomic premium levels, higher deductibles and lower coverage limits. Consequently, as with the 2009-2010 insurance year, Discovery elected to not purchase offshore named windstorm property and business interruption insurance coverage for the 2010-2011 insurance year. There is a possibility that this situation could continue to occur periodically. *Environmental* — During the first quarter of 2011, we discovered excess emissions at our East Texas gas plant. We met with the Texas Commission on Environmental Quality, or TCEQ, in April 2011 to discuss this matter which was included in Title V reports to the State. The TCEQ has requested detailed follow-up from us and an action plan to address this matter. At this time formal enforcement has not been initiated, although it is not possible to predict what action the TCEQ may take or the cost to address this matter. We do not believe the ultimate resolution of this matter will have a material adverse effect on our consolidated results of operations, financial position or cash flows. *Indemnification* — DCP Midstream, LLC has indemnified us for certain potential environmental claims, losses and expenses associated with the operation of the assets of certain of our predecessors. See the "Indemnification" section of Note 5 in Item 8 of our 2010 Form 10-K for additional details.

Business Segments

3 Months Ended

Mar. 31, 2011

Business Segments

Business Segments

15. Business Segments

Our operations are located in the United States and are organized into three reporting segments: (1) Natural Gas Services; (2) Wholesale Propane Logistics; and (3) NGL Logistics.

Natural Gas Services — Our Natural Gas Services segmentprovides services that include gathering, compressing, treating, processing, fractionating, transporting and storing natural gas. The segment consists of our Northern Louisiana system, our Southern Oklahoma system, our Wyoming system, our Michigan system, our 33.33% interest in the Southeast Texas system, our 50.1% interest in the East Texas system, (acquired in January 2011) our 75% interest in the Colorado system and our 40% limited liability company interest in Discovery.

Wholesale Propane Logistics — Our Wholesale Propane Logistics segment provides services that include the receipt of propane by pipeline, rail or ship to our terminals that deliver the product to retail distributors. The segment consists of six owned rail terminals, one owned marine import terminal, one leased marine terminal (Atlantic, acquired in July 2010), one pipeline terminal and access to several open-access pipeline terminals.

NGL Logistics — Our NGL Logistics segment provides services that include transportation, storage and fractionation of NGLs. The segment consists of the Seabreeze and Wilbreeze intrastate NGL pipelines, the Wattenberg (acquired in January 2010) and Black Lake (acquired the remaining 55% interest in July 2010 to bring our total interest to 100%) interstate NGL pipelines, the NGL storage facility in Michigan (Marysville, acquired in December 2010) and the DJ Basin NGL Fractionators in Colorado (acquired in March 2011).

These segments are monitored separately by management for performance against our internal forecast and are consistent with internal financial reporting. These segments have been identified based on the differing products and services, regulatory environment and the expertise required for these operations. Gross margin is a performance measure utilized by management to monitor the business of each segment.

The following tables set forth our segment information:

Three Months Ended March 31, 2011


	Natural Gas Services			Wholesale Propane Logistics			NGL Logistics			Other			Eliminations			Total
	(Millions)
Total operating revenue	$	164.5		$	247.8		$	15.0		$	—		$	(2.2	)	$	425.1
Total purchases		(146.5	)		(226.0	)		(4.7	)		—			2.2			(375.0	)

Gross margin (a)	$	18.0		$	21.8		$	10.3		$	—		$	—		$	50.1
Operating and maintenance expense		(16.5	)		(3.6	)		(4.0	)		—			—			(24.1	)
Depreciation and amortization expense		(17.5	)		(0.7	)		(1.7	)		—			—			(19.9	)
General and administrative expense		—			—			—			(9.0	)		—			(9.0	)
Other income		—			—			0.1			—			—			0.1
Earnings from unconsolidated affiliates		8.6			—			—			—			—			8.6
Interest expense		—			—			—			(8.0	)		—			(8.0	)
Income tax expense (b)		—			—			—			(0.2	)		—			(0.2	)

Net (loss) income		(7.4	)		17.5			4.7			(17.2	)		—			(2.4	)
Net income attributable to noncontrolling interests		(3.5	)		—			—			—			—			(3.5	)

Net (loss) income attributable to partners	$	(10.9	)	$	17.5		$	4.7		$	(17.2	)	$	—		$	(5.9	)

Non-cash derivative mark-to-market (c)	$	(33.4	)	$	(0.3	)	$	—		$	(0.2	)	$	—		$	(33.9	)

Capital expenditures	$	8.8		$	0.6		$	4.3		$	—		$	—		$	13.7

Acquisition expenditures	$	121.8		$	—		$	29.6		$	—		$	—		$	151.4

Three Months Ended March 31, 2010


	Natural Gas Services			Wholesale Propane Logistics			NGL Logistics			Other			Total
	(Millions)
Total operating revenue	$	218.1		$	180.8		$	4.8		$	—		$	403.7
Total purchases		(164.3	)		(167.1	)		(1.4	)		—			(332.8	)

Gross margin (a)	$	53.8		$	13.7		$	3.4		$	—		$	70.9
Operating and maintenance expense		(16.2	)		(2.6	)		(0.2	)		—			(19.0	)
Depreciation and amortization expense		(17.0	)		(0.3	)		(0.5	)		—			(17.8	)
General and administrative expense		—			—			—			(8.6	)		(8.6	)
Earnings from unconsolidated affiliates		13.9			—			0.5			—			14.4
Interest expense		—			—			—			(7.2	)		(7.2	)
Income tax expense (b)		—			—			—			(0.3	)		(0.3	)

Net income (loss)		34.5			10.8			3.2			(16.1	)		32.4
Net income attributable to noncontrolling interests		(0.1	)		—			—			—			(0.1	)

Net income (loss) attributable to partners	$	34.4		$	10.8		$	3.2		$	(16.1	)	$	32.3

Non-cash derivative mark-to-market (c)	$	8.4		$	(0.6	)	$	—		$	—		$	7.8

Capital expenditures	$	12.1		$	—		$	0.1		$	—		$	12.2

Acquisition expenditures	$	—		$	—		$	22.0		$	—		$	22.0

Investments in unconsolidated affiliates	$	0.7		$	—		$	—		$	—		$	0.7


	March 31, 2011		December 31, 2010
	(Millions)
Segment long-term assets:
Natural Gas Services (e)	$	1,250.7	$	1,253.7
Wholesale Propane Logistics		101.4		101.7
NGL Logistics		253.0		221.7
Other (d)		6.3		4.1

Total long-term assets		1,611.4		1,581.2
Current assets		199.9		232.0

Total assets	$	1,811.3	$	1,813.2

(a)

Gross margin consists of total operating revenues, including commodity derivative activity, less purchases of natural gas, propane and NGLs. Gross margin is viewed as a non-GAAP measure under the rules of the SEC, but is included as a supplemental disclosure because it is a primary performance measure used by management as it represents the results of product sales versus product purchases. As an indicator of our operating performance, gross margin should not be considered an alternative to, or more meaningful than, net income or cash flow as determined in accordance with GAAP. Our gross margin may not be comparable to a similarly titled measure of another company because other entities may not calculate gross margin in the same manner.

(b)	Income tax expense relates primarily to the Texas margin tax and the Michigan business tax.

(c)	Non-cash derivative mark-to-market is included in segment gross margin, along with cash settlements for our derivative contracts.

(d)	Other long-term assets not allocable to segments consist of unrealized gains on derivative instruments, corporate leasehold improvements and other long-term assets.

(e)

The segment information for the three months ended March 31, 2011 and as of December 31, 2010 includes the results of Southeast Texas as transfers of net assets between entities under common control are accounted for as if the transfer occurred at the beginning of the period, and prior years are retrospectively adjusted to furnish comparative information similar to the pooling method.

Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2011

Supplemental Cash Flow Information

Supplemental Cash Flow Information

16. Supplemental Cash Flow Information


	Three Months Ended March 31,
	2011		2010
	(Millions)
Cash paid for interest:
Cash paid for interest, net of amounts capitalized	$	1.2	$	1.6
Cash paid for income taxes, net of income tax refunds	$	—	$	—
Non-cash investing and financing activities:
Property, plant and equipment acquired with accounts payable	$	4.1	$	3.9
Other non-cash additions of property, plant and equipment	$	10.9	$	0.2
Acquisition related contingent consideration	$	—	$	1.0
Accounts payable related to equity issuance costs	$	0.1	$	—
Non-cash change in parent advances	$	1.7	$	—
Non-cash distributions to DCP Midstream, LLC	$	2.6	$	—

Supplementary Information - Condensed Consolidating Financial Information

3 Months Ended

Mar. 31, 2011

Supplementary Information - Condensed Consolidating Financial Information

Supplementary Information - Condensed Consolidating Financial Information

17. Supplementary Information — Condensed Consolidating Financial Information

The following condensed consolidating financial information presents the results of operations, financial position and cash flows of DCP Midstream Partners, LP, or parent guarantor, DCP Midstream Operating LP, or subsidiary issuer, which is a 100% owned subsidiary, and non-guarantor subsidiaries, as well as the consolidating adjustments necessary to present DCP Midstream Partners, LP's results on a consolidated basis. In conjunction with the universal shelf registration statement on Form S-3 filed with the SEC on May 26, 2010, the parent guarantor has agreed to fully and unconditionally guarantee securities of the subsidiary issuer. For the purpose of the following financial information, investments in subsidiaries are reflected in accordance with the equity method of accounting. The financial information may not necessarily be indicative of results of operations, cash flows, or financial position had the subsidiaries operated as independent entities.


	Condensed Consolidating Balance Sheets March 31, 2011
	Parent Guarantor		Subsidiary Issuer			Non-Guarantor Subsidiaries			Consolidating Adjustments			Consolidated
	(Millions)
ASSETS
Current assets:
Cash and cash equivalents	$	—	$	1.5		$	4.8		$	(1.3	)	$	5.0
Accounts receivable		—		—			150.5			—			150.5
Inventories		—		—			42.1			—			42.1
Other		—		—			2.3			—			2.3

Total current assets		—		1.5			199.7			(1.3	)		199.9
Property, plant and equipment, net		—		—			1,120.6			—			1,120.6
Goodwill and intangible assets, net		—		—			264.6			—			264.6
Advances receivable — consolidated subsidiaries		443.1		553.1			—			(996.2	)		—
Investments in consolidated subsidiaries		146.9		289.3			—			(436.2	)		—
Investments in unconsolidated affiliates		—		—			216.0			—			216.0
Other long-term assets		—		2.2			8.0			—			10.2

Total assets	$	590.0	$	846.1		$	1,808.9		$	(1,433.7	)	$	1,811.3

LIABILITIES AND EQUITY
Accounts payable and other current liabilities	$	0.3	$	17.6		$	223.2		$	(1.3	)	$	239.8
Advances payable — consolidated subsidiaries		—		—			996.2			(996.2	)		—
Long-term debt		—		675.8			—			—			675.8
Other long-term liabilities		—		5.8			79.1			—			84.9

Total liabilities		0.3		699.2			1,298.5			(997.5	)		1,000.5

Commitments and contingent liabilities

Equity:
Partners' equity
Net equity		589.7		170.0			289.5			(436.2	)		613.0
Accumulated other comprehensive loss		—		(23.1	)		(0.2	)		—			(23.3	)

Total partners' equity		589.7		146.9			289.3			(436.2	)		589.7
Noncontrolling interests		—		—			221.1			—			221.1

Total equity		589.7		146.9			510.4			(436.2	)		810.8

Total liabilities and equity	$	590.0	$	846.1		$	1,808.9		$	(1,433.7	)	$	1,811.3


	Condensed Consolidating Balance Sheets December 31, 2010 (a)
	Parent Guarantor		Subsidiary Issuer			Non- Guarantor Subsidiaries			Consolidating Adjustments			Consolidated
	(Millions)
ASSETS
Current assets:
Cash and cash equivalents	$	—	$	1.5		$	6.7		$	(1.5	)	$	6.7
Accounts receivable		—		—			151.0			—			151.0
Inventories		—		—			64.1			—			64.1
Other		—		—			10.2			—			10.2

Total current assets		—		1.5			232.0			(1.5	)		232.0
Property, plant and equipment, net		—		—			1,097.1			—			1,097.1
Goodwill and intangible assets, net		—		—			258.6			—			258.6
Advances receivable — consolidated subsidiaries		333.4		534.7			—			(868.1	)		—
Investments in consolidated subsidiaries		297.5		436.2			—			(733.7	)		—
Investments in unconsolidated affiliates		—		—			216.9			—			216.9
Other long-term assets		—		2.3			6.3			—			8.6

Total assets	$	630.9	$	974.7		$	1,810.9		$	(1,603.3	)	$	1,813.2

LIABILITIES AND EQUITY

Accounts payable and other current liabilities	$	0.2	$	19.5		$	193.0		$	(1.5	)	$	211.2
Advances payable — consolidated subsidiaries		—		—			868.1			(868.1	)		—
Long-term debt		—		647.8			—			—			647.8
Other long-term liabilities		—		9.9			93.5			—			103.4

Total liabilities		0.2		677.2			1,154.6			(869.6	)		962.4

Commitments and contingent liabilities
Equity:
Partners' equity
Predecessor equity		—		—			112.6			—			112.6
Net equity		630.7		324.9			323.9			(733.7	)		545.8
Accumulated other comprehensive loss		—		(27.4	)		(0.3	)		—			(27.7	)

Total partners' equity		630.7		297.5			436.2			(733.7	)		630.7
Noncontrolling interests		—		—			220.1			—			220.1

Total equity		630.7		297.5			656.3			(733.7	)		850.8

Total liabilities and equity	$	630.9	$	974.7		$	1,810.9		$	(1,603.3	)	$	1,813.2

(a)

The financial information as of December 31, 2010 includes the results of Southeast Texas as transfers of net assets between entities under common control are accounted for as if the transfer occurred at the beginning of the period, and prior years are retrospectively adjusted to furnish comparative information similar to the pooling method.


	Condensed Consolidating Statements of Operations Three Months Ended March 31, 2011
	Parent Guarantor			Subsidiary Issuer			Non- Guarantor Subsidiaries			Consolidating Adjustments		Consolidated
	(Millions)
Operating revenues:
Sales of natural gas, propane, NGLs and condensate	$	—		$	—		$	429.7		$	—	$	429.7
Transportation, processing and other		—			—			35.6			—		35.6
Losses from commodity derivative activity, net		—			—			(40.2	)		—		(40.2	)

Total operating revenues		—			—			425.1			—		425.1

Operating costs and expenses:
Purchases of natural gas, propane and NGLs		—			—			(375.0	)		—		(375.0	)
Operating and maintenance expense		—			—			(24.1	)		—		(24.1	)
Depreciation and amortization expense		—			—			(19.9	)		—		(19.9	)
General and administrative expense		—			—			(9.0	)		—		(9.0	)
Other income		—			—			0.1			—		0.1

Total operating costs and expenses		—			—			(427.9	)		—		(427.9	)

Operating (loss) income		—			—			(2.8	)		—		(2.8	)
Interest expense, net		—			(8.0	)		—			—		(8.0	)
(Losses) income from consolidated subsidiaries		(5.9	)		2.1			—			3.8		—
Earnings from unconsolidated affiliates		—			—			8.6			—		8.6

(Losses) income before income taxes		(5.9	)		(5.9	)		5.8			3.8		(2.2	)
Income tax expense		—			—			(0.2	)		—		(0.2	)

Net (loss) income		(5.9	)		(5.9	)		5.6			3.8		(2.4	)
Net income attributable to noncontrolling interests		—			—			(3.5	)		—		(3.5	)

Net (loss) income attributable to partners	$	(5.9	)	$	(5.9	)	$	2.1		$	3.8	$	(5.9	)


	Condensed Consolidating Statements of Operations Three Months Ended March 31, 2010 (a)
	Parent Guarantor		Subsidiary Issuer			Non- Guarantor Subsidiaries			Consolidating Adjustments			Consolidated
	(Millions)
Operating revenues:
Sales of natural gas, propane, NGLs and condensate	$	—	$	—		$	370.4		$	—		$	370.4
Transportation, processing and other		—		—			27.3			—			27.3
Gains from commodity derivative activity, net		—		—			6.0			—			6.0

Total operating revenues		—		—			403.7			—			403.7

Operating costs and expenses:
Purchases of natural gas, propane and NGLs		—		—			(332.8	)		—			(332.8	)
Operating and maintenance expense		—		—			(19.0	)		—			(19.0	)
Depreciation and amortization expense		—		—			(17.8	)		—			(17.8	)
General and administrative expense		—		—			(8.6	)		—			(8.6	)

Total operating costs and expenses		—		—			(378.2	)		—			(378.2	)

Operating income		—		—			25.5			—			25.5
Interest expense, net		—		(7.1	)		(0.1	)		—			(7.2	)
Earnings from consolidated subsidiaries		32.3		39.4			—			(71.7	)		—
Earnings from unconsolidated affiliates		—		—			14.4			—			14.4
Income tax expense		—		—			(0.3	)		—			(0.3	)

Net income		32.3		32.3			39.5			(71.7	)		32.4
Net income attributable to noncontrolling interests		—		—			(0.1	)		—			(0.1	)

Net income attributable to partners	$	32.3	$	32.3		$	39.4		$	(71.7	)	$	32.3

(a)


	Condensed Consolidating Statements of Cash Flows Three Months Ended March 31, 2011
	Parent Guarantor			Subsidiary Issuer			Non- Guarantor Subsidiaries			Consolidating Adjustments			Consolidated
	(Millions)
OPERATING ACTIVITIES

Net cash (used in) provided by operating activities	$	(109.6	)	$	(27.9	)	$	201.3		$	0.2		$	64.0

INVESTING ACTIVITIES:
Capital expenditures		—			—			(13.7	)		—			(13.7	)
Acquisitions, net of cash acquired		—			—			(151.4	)		—			(151.4	)
Investments in unconsolidated affiliates		—			—			(0.1	)		—			(0.1	)
Proceeds from sale of assets		—			—			0.2			—			0.2

Net cash used in investing activities		—			—			(165.0	)		—			(165.0	)

FINANCING ACTIVITIES:
Proceeds from debt		—			547.0			—			—			547.0
Payments of debt		—			(519.0	)		—			—			(519.0	)
Payment of deferred financing costs		—			(0.1	)		—			—			(0.1	)
Proceeds from issuance of common units, net of offering costs		139.7			—			—			—			139.7
Excess purchase price over acquired assets		—			—			(35.7	)		—			(35.7	)
Distributions to unitholders and general partner		(30.1	)		—			—			—			(30.1	)
Distributions to noncontrolling interests		—			—			(5.4	)		—			(5.4	)
Contributions from noncontrolling interests		—			—			2.9			—			2.9

Net cash provided by (used in) financing activities		109.6			27.9			(38.2	)		—			99.3

Net change in cash and cash equivalents		—			—			(1.9	)		0.2			(1.7	)
Cash and cash equivalents, beginning of period		—			1.5			6.7			(1.5	)		6.7

Cash and cash equivalents, end of period	$	—		$	1.5		$	4.8		$	(1.3	)	$	5.0


	Condensed Consolidating Statements of Cash Flows Three Months Ended March 31, 2010 (a)
	Parent Guarantor			Subsidiary Issuer			Non- Guarantor Subsidiaries			Consolidating Adjustments			Consolidated
	(Millions)
OPERATING ACTIVITIES

Net cash provided by (used in) operating activities	$	24.6		$	(12.0	)	$	42.0		$	(0.9	)	$	53.7

INVESTING ACTIVITIES:
Capital expenditures		—			—			(12.2	)		—			(12.2	)
Acquisitions, net of cash acquired		—			—			(22.0	)		—			(22.0	)
Investments in unconsolidated affiliates		—			—			(0.7	)		—			(0.7	)
Proceeds from sale of assets		—			—			0.2			—			0.2
Proceeds from sales of available-for-sale securities		—			10.1			—			—			10.1

Net cash provided by (used in) investing activities		—			10.1			(34.7	)		—			(24.6	)

FINANCING ACTIVITIES:
Proceeds from debt		—			116.6			—			—			116.6
Payments of debt		—			(114.6	)		—			—			(114.6	)
Distributions to unitholders and general partner		(24.6	)		—			—			—			(24.6	)
Distributions to noncontrolling interests		—			—			(3.7	)		—			(3.7	)
Contributions from noncontrolling interests		—			—			3.9			—			3.9
Net change in advances to predecessor from DCP Midstream LLC		—			—			(2.7	)		—			(2.7	)
Purchase of additional interest in a subsidiary		—			—			(3.5	)		—			(3.5	)

Net cash provided by (used in) financing activities		(24.6	)		2.0			(6.0	)		—			(28.6	)

Net change in cash and cash equivalents		—			0.1			1.3			(0.9	)		0.5
Cash and cash equivalents, beginning of period		—			1.6			1.3			(0.8	)		2.1

Cash and cash equivalents, end of period	$	—		$	1.7		$	2.6		$	(1.7	)	$	2.6

(a)

- Definition

Text block that encapsulates the detailed table comprising the condensed financial statements (balance sheet, income statement and statement of cash flows), normally using the registrant (parent) as the sole domain member. If condensed consolidating financial statements are being presented, other domain members (in addition to parent) such as guarantor subsidiaries, non-guarantor subsidiaries, and the consolidation eliminations, will be included in order that the respective monetary amounts for each of the domains will aggregate to the respective amounts on the consolidated financial statements. The line items are the various captions used to compile the condensed financial statements. Using extensions, most, if not all, of the elements representing condensed financial statement captions will be the same as those used for the consolidated financial statements captions.

+ References+ Details

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2011
Subsequent Events
Subsequent Events	18. Subsequent Events On April 25, 2011 the board of directors of the General Partner declared a quarterly distribution of $0.625 per unit, payable on May 13, 2011 to unitholders of record on May 6, 2011. On April 18, 2011, we made an estimated federal tax payment of $29.3 million related to our acquisition of Marysville.

Condensed Consolidated Statements of Changes in Equity (Parenthetical) (Common Unitholders [Member])	3 Months Ended
	Mar. 31, 2011
Common Unitholders [Member]
Issuance of units	3,596,636