Investments in Unconsolidated Affiliates (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended											3 Months Ended		9 Months Ended								3 Months Ended		9 Months Ended					3 Months Ended		9 Months Ended											3 Months Ended		9 Months Ended											3 Months Ended				9 Months Ended						3 Months Ended					9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010	Sep. 30, 2011 NGL Pipelines and Services [Member]	Sep. 30, 2010 NGL Pipelines and Services [Member]	Sep. 30, 2011 NGL Pipelines and Services [Member]	Sep. 30, 2010 NGL Pipelines and Services [Member]	Dec. 31, 2010 NGL Pipelines and Services [Member]	Sep. 30, 2011 NGL Pipelines and Services [Member] Venice Energy Service Company LLC [Member]	Dec. 31, 2010 NGL Pipelines and Services [Member] Venice Energy Service Company LLC [Member]	Sep. 30, 2011 NGL Pipelines and Services [Member] K/D/S Promix, LLC [Member]	Dec. 31, 2010 NGL Pipelines and Services [Member] K/D/S Promix, LLC [Member]	Sep. 30, 2011 NGL Pipelines and Services [Member] Baton Rouge Fractionators LLC [Member]	Dec. 31, 2010 NGL Pipelines and Services [Member] Baton Rouge Fractionators LLC [Member]	Sep. 30, 2011 NGL Pipelines and Services [Member] Skelly-Belvieu Pipeline Company, LLC [Member]	Dec. 31, 2010 NGL Pipelines and Services [Member] Skelly-Belvieu Pipeline Company, LLC [Member]	Sep. 30, 2011 Onshore Natural Gas Pipelines And Services [Member]	Sep. 30, 2010 Onshore Natural Gas Pipelines And Services [Member]	Sep. 30, 2011 Onshore Natural Gas Pipelines And Services [Member]	Sep. 30, 2010 Onshore Natural Gas Pipelines And Services [Member]	Sep. 30, 2011 Onshore Natural Gas Pipelines And Services [Member] Evangeline [Member]		Dec. 31, 2010 Onshore Natural Gas Pipelines And Services [Member] Evangeline [Member]		Sep. 30, 2011 Onshore Natural Gas Pipelines And Services [Member] White River Hub, LLC [Member]	Dec. 31, 2010 Onshore Natural Gas Pipelines And Services [Member] White River Hub, LLC [Member]	Sep. 30, 2011 Onshore Crude Oil Pipelines and Services [Member]	Sep. 30, 2010 Onshore Crude Oil Pipelines and Services [Member]	Sep. 30, 2011 Onshore Crude Oil Pipelines and Services [Member]	Sep. 30, 2010 Onshore Crude Oil Pipelines and Services [Member]	Dec. 31, 2010 Onshore Crude Oil Pipelines and Services [Member]	Sep. 30, 2011 Onshore Crude Oil Pipelines and Services [Member] Seaway Crude Pipeline Company [Member]	Dec. 31, 2010 Onshore Crude Oil Pipelines and Services [Member] Seaway Crude Pipeline Company [Member]	Sep. 30, 2011 Offshore Pipelines And Services [Member]	Sep. 30, 2010 Offshore Pipelines And Services [Member]	Sep. 30, 2011 Offshore Pipelines And Services [Member]	Sep. 30, 2010 Offshore Pipelines And Services [Member]	Dec. 31, 2010 Offshore Pipelines And Services [Member]	Sep. 30, 2011 Offshore Pipelines And Services [Member] Poseidon Oil Pipeline Company, LLC [Member]	Dec. 31, 2010 Offshore Pipelines And Services [Member] Poseidon Oil Pipeline Company, LLC [Member]	Sep. 30, 2011 Offshore Pipelines And Services [Member] Cameron Highway Oil Pipeline Company [Member]	Dec. 31, 2010 Offshore Pipelines And Services [Member] Cameron Highway Oil Pipeline Company [Member]	Sep. 30, 2011 Offshore Pipelines And Services [Member] Deepwater Gateway LLC [Member]	Dec. 31, 2010 Offshore Pipelines And Services [Member] Deepwater Gateway LLC [Member]	Sep. 30, 2011 Offshore Pipelines And Services [Member] Neptune Pipeline Company, LLC [Member]	Dec. 31, 2010 Offshore Pipelines And Services [Member] Neptune Pipeline Company, LLC [Member]	Sep. 30, 2011 Petrochemical and Refined Products Services [Member]	Sep. 30, 2010 Petrochemical and Refined Products Services [Member]	Sep. 30, 2011 Petrochemical and Refined Products Services [Member]	Sep. 30, 2010 Petrochemical and Refined Products Services [Member]	Dec. 31, 2010 Petrochemical and Refined Products Services [Member]	Sep. 30, 2011 Petrochemical and Refined Products Services [Member] Baton Rouge Propylene Concentrator, LLC [Member]	Dec. 31, 2010 Petrochemical and Refined Products Services [Member] Baton Rouge Propylene Concentrator, LLC [Member]	Sep. 30, 2011 Petrochemical and Refined Products Services [Member] Centennial Pipeline LLC [Member]	Dec. 31, 2010 Petrochemical and Refined Products Services [Member] Centennial Pipeline LLC [Member]	Sep. 30, 2011 Petrochemical and Refined Products Services [Member] Other Unconsolidated Affiliates [Member]		Dec. 31, 2010 Petrochemical and Refined Products Services [Member] Other Unconsolidated Affiliates [Member]		Sep. 30, 2011 Other Investment [Member]		Sep. 30, 2010 Other Investment [Member]		Sep. 30, 2011 Other Investment [Member]		Sep. 30, 2010 Other Investment [Member]		Dec. 31, 2010 Other Investment [Member]		Jul. 31, 2011 Other Investment [Member] Energy Transfer Equity [Member]	Sep. 30, 2011 Other Investment [Member] Energy Transfer Equity [Member]	Dec. 31, 2010 Other Investment [Member] Energy Transfer Equity [Member]	Sep. 30, 2011 Poseidon Oil Pipeline Company, LLC [Member]	Sep. 30, 2011 Centennial Pipeline LLC [Member]	Sep. 30, 2011 Energy Transfer Equity [Member]	Sep. 30, 2011 Texas Express Pipeline LLC [Member]
Schedule of Equity Method Investments [Line Items]
Ownership Interest (in hundredths)											13.10%		50.00%		32.20%		50.00%						49.50%	[1]			50.00%							50.00%							36.00%		50.00%		50.00%		25.70%							30.00%		50.00%																	13.60%		36.00%	50.00%		45.00%
Investments in unconsolidated affiliates	$ 1,908.5		$ 1,908.5		$ 2,293.1						$ 34.2	$ 31.9	$ 40.6	$ 43.5	$ 21.1	$ 21.9	$ 34.5	$ 34.2					$ 5.0	[1]	$ 6.4	[1]	$ 26.0	$ 26.2						$ 173.1	$ 172.2						$ 55.5	$ 57.2	$ 225.6	$ 233.7	$ 95.4	$ 98.4	$ 52.4	$ 53.9						$ 9.5	$ 10.1	$ 55.3	$ 63.1	$ 3.5	[2]	$ 3.6	[2]												$ 1,076.8	$ 1,436.8
Number of common units owned accounted for under equity method (in units)																																																																									30,411,954
Number of Energy Transfer Equity common units sold (in units)																																																																								8,564,136					8,564,136
Cash received from the sale of Energy Transfer Equity common units																																																																								333.5
Gain on the sale of Energy Transfer Equity common units																																																																								24.8
Equity in income (loss) of unconsolidated affiliates by business segment [Abstract]
Equity in income of unconsolidated affiliates	8.6	5.6	35.9	43.2		4.3	5.1	16.4	12.1										1.4	1.2	4.1	3.4							(1.0)	1.6	(3.1)	7.5				5.4	10.1	20.3	33.0										(3.8)	(0.5)	(13.1)	(5.8)										2.3		(11.9)		11.3		(7.0)
Unamortized excess cost amounts by business segment [Abstract]
Unamortized excess cost amounts	1,231.0		1,231.0		1,589.5	24.9		24.9		25.7																			19.4		19.4		19.7			15.1		15.1		16.0									2.9		2.9		3.0									1,168.7	[3]			1,168.7	[3]			1,525.1	[3]
Equity method investment tangible and intangible asset amortization expense	7.9	9.9	26.9	30.6		0.3	0.2	0.8	0.7																				0.1	0.1	0.5	0.5				0.3	0.3	0.9	0.9										0.1	0.1	0.1	1.0										7.1		9.2		24.6		27.5
Summarized income statement information of unconsolidated affiliates [Abstract]
Revenues						105.2	78.3	321.7	227.8										59.5	63.8	149.7	159.8							11.9	16.6	32.7	57.1				38.8	49.4	128.8	155.8										5.9	15.1	25.2	39.3										2,097.9	[4]	1,587.8	[4]	6,061.9	[4]	4,822.3	[4]
Operating Income (Loss)						20.7	17.3	74.6	43.8										2.9	2.6	8.2	7.0							(0.5)	5.8	(2.1)	23.9				15.0	25.3	51.6	81.3										(4.8)	2.5	(17.2)	0.5										270.0	[4]	202.1	[4]	894.8	[4]	720.2	[4]
Net Income (Loss)						20.5	17.3	74.5	43.7										3.0	2.4	8.3	6.7							(0.5)	5.8	(2.1)	23.9				14.6	25.1	50.8	80.5										(6.9)	0.2	(23.7)	(6.6)										69.1	[4]	(15.3)	[4]	224.0	[4]	116.7	[4]
Fair value of investment																																																																									$ 1,060

[1] Evangeline refers to our ownership interests in Evangeline Gas Pipeline Company, L.P. and Evangeline Gas Corp., collectively.

[2] Other unconsolidated affiliates include a 50% interest in a propylene pipeline extending from Mont Belvieu, Texas to La Porte, Texas and a 25% interest in a company that provides logistics communications solutions between petroleum pipelines and their customers.

[3] Holdings' investment in Energy Transfer Equity exceeded its share of the historical cost of the underlying net assets of such investee by $1.66 billion in May 2007. At September 30, 2011, this basis differential decreased to $1.17 billion (after taking into account related amortization amounts and the sale of 8.56 million Energy Transfer Equity common units during 2011) and consisted of the following: $366.5 million attributed to fixed assets; $397.7 million attributed to the incentive distribution rights (an indefinite-life intangible asset) held by Energy Transfer Equity in the cash flows of ETP; $144.4 million attributed to amortizable intangible assets and $260.1 million attributed to equity method goodwill. These unamortized excess cost amounts are being amortized over their estimated economic lives of 20-27 years, as applicable.

[4] Net income for Energy Transfer Equity represents net income attributable to the partners of Energy Transfer Equity.