UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED EQUITY (USD $) In Millions	Limited Partners [Member]	General Partner [Member]		Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2009	$ 1,972.4		[1]	$ (33.3)	$ 8,534.0	$ 10,473.1
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	124.0		[1]	0	622.8	746.8
Operating lease expenses paid by EPCO	0	0		0	0.3	0.3
Cash distributions paid to partners	(149.6)		[1]	0	0	(149.6)
Cash distributions paid to noncontrolling interest	0	0		0	(720.5)	(720.5)
Cash contributions from noncontrolling interest	0	0		0	961.9	961.9
Net cash proceeds from issuance of common units	0	0		0	0	0
Acquisition of treasury units	0	0		0	(3.0)	(3.0)
Amortization of equity awards	1.1	0		0	18.2	19.3
Change in value of cash flow hedges	0	0		(5.0)	(20.9)	(25.9)
Proportionate share of other comprehensive loss of unconsolidated affiliate	0	0		(0.4)	0	(0.4)
Other	0	0		0	(1.1)	(1.1)
Balance at Jun. 30, 2010	1,947.9		[1]	(38.7)	9,391.7	11,300.9
Balance at Dec. 31, 2010	11,406.7			(32.5)	526.6	11,900.8
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	854.4			0	28.6	883.0
Operating lease expenses paid by EPCO	0.3			0	0	0.3
Cash distributions paid to partners	(966.5)			0	0	(966.5)
Cash distributions paid to noncontrolling interest	0			0	(34.8)	(34.8)
Cash contributions from noncontrolling interest	0			0	2.6	2.6
Net cash proceeds from issuance of common units	45.1			0	0	45.1
Acquisition of treasury units	(9.6)			0	0	(9.6)
Amortization of equity awards	25.2			0	0.1	25.3
Change in value of cash flow hedges	0			(72.4)	0	(72.4)
Proportionate share of other comprehensive loss of unconsolidated affiliate	0			(0.7)	0	(0.7)
Other	4.8			(0.6)	(2.0)	2.2
Balance at Jun. 30, 2011	$ 11,360.4			$ (106.2)	$ 521.1	$ 11,775.3

[1] Amount is negligible.