UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME
Net income	$ 479.5	$ 347.6	$ 1,362.5	$ 1,094.4
Commodity derivative instruments:
Changes in fair value of cash flow hedges	(6.1)	(64.1)	(179.2)	(31.0)
Reclassification of gains and losses to net income	35.1	(25.6)	178.8	(10.6)
Interest rate derivative instruments:
Changes in fair value of cash flow hedges	(260.1)	(81.6)	(306.1)	(168.4)
Reclassification of losses to net income	1.6	8.1	4.6	21.4
Foreign currency derivative instruments:
Changes in fair value of cash flow hedges	0	0.1	0	(0.1)
Reclassification of gains to net income	0	0	0	(0.3)
Total cash flow hedges	(229.5)	(163.1)	(301.9)	(189.0)
Foreign currency translation adjustment	0	0.5	0	0.3
Change in funded status of pension and postretirement plans, net of tax	0	0	(0.6)	(0.9)
Proportionate share of other comprehensive income (loss) of unconsolidated affiliate	0	11.9	(0.7)	11.5
Total other comprehensive loss	(229.5)	(150.7)	(303.2)	(178.1)
Comprehensive income	250.0	196.9	1,059.3	916.3
Comprehensive income attributable to noncontrolling interests	(8.1)	(167.2)	(36.7)	(768.0)
Comprehensive income attributable to partners	$ 241.9	$ 29.7	$ 1,022.6	$ 148.3

Net of tax effect change in accumulated gains and losses from commodity derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. The change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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