STATEMENTS OF CONSOLIDATED EQUITY (USD $) In Millions, unless otherwise specified	Limited Partners [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]	Total
Balance at Dec. 31, 2009	$ 1,972.4	$ (33.3)	$ 8,534.0	$ 10,473.1
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	320.8	0	1,062.9	1,383.7
Cash distributions paid to limited partners	(307.7)	0	0	(307.7)
Cash distributions paid to noncontrolling interests	0	0	(1,467.8)	(1,467.8)
Cash contributions from noncontrolling interests	0	0	1,096.5	1,096.5
Net cash proceeds from issuance of common units	528.5	0	0	528.5
Amortization of fair value of equity-based awards	7.6	0	51.9	59.5
Common units issued to EPCO in exchange for equity interest in trucking business	1.8	0	36.0	37.8
Common units issued in connection with acquisition of marine shipyard business	0	0	99.7	99.7
Issuance of common units pursuant to Holdings Merger (see Note 13)	8,883.5	(1.3)	(8,882.2)	0
Cash flow hedges	0	(9.4)	2.2	(7.2)
Other	(0.2)	11.5	(6.6)	4.7
Balance at Dec. 31, 2010	11,406.7	(32.5)	526.6	11,900.8
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	2,046.9	0	41.4	2,088.3
Cash distributions paid to limited partners	(1,974.3)	0	0	(1,974.3)
Cash distributions paid to noncontrolling interests	0	0	(60.7)	(60.7)
Cash contributions from noncontrolling interests	0	0	8.5	8.5
Net cash proceeds from issuance of common units	542.9	0	0	542.9
Acquisition of noncontrolling interest in subsidiary	(5.4)	0	(9.6)	(15.0)
Amortization of fair value of equity-based awards	50.9	0	0.1	51.0
Issuance of common units pursuant to Duncan Merger (see Note 13)	402.8	(1.1)	(401.7)	0
Cash flow hedges	0	(316.5)	0	(316.5)
Other	(5.7)	(1.3)	1.3	(5.7)
Balance at Dec. 31, 2011	12,464.8	(351.4)	105.9	12,219.3
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	2,419.9	0	8.1	2,428.0
Cash distributions paid to limited partners	(2,178.6)	0	0	(2,178.6)
Cash distributions paid to noncontrolling interests	0	0	(13.3)	(13.3)
Cash contributions from noncontrolling interests	0	0	6.6	6.6
Net cash proceeds from issuance of common units	816.8	0	0	816.8
Amortization of fair value of equity-based awards	58.9	0	0	58.9
Cash flow hedges	0	(22.5)	0	(22.5)
Other	(23.7)	3.5	1.0	(19.2)
Balance at Dec. 31, 2012	$ 13,558.1	$ (370.4)	$ 108.3	$ 13,296.0