Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended	3 Months Ended				1 Months Ended	3 Months Ended				1 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Energy Transfer Equity [Member]		Mar. 31, 2012 Energy Transfer Equity [Member]		Mar. 31, 2013 Seminole Pipeline segment [Member]	Mar. 31, 2013 Seminole Pipeline segment [Member]		Mar. 31, 2012 Seminole Pipeline segment [Member]		Jan. 31, 2013 Chemical Trucking Assets [Member]	Mar. 31, 2013 Chemical Trucking Assets [Member]		Mar. 31, 2012 Chemical Trucking Assets [Member]		Mar. 31, 2013 West Storage Facilities [Member]		Mar. 31, 2012 West Storage Facilities [Member]		Mar. 31, 2013 Other Disposal of Assets [Member]		Mar. 31, 2012 Other Disposal of Assets [Member]
Decrease (increase) in:
Accounts receivable - trade	$ (163.5)	$ (25.6)
Accounts receivable - related parties	(0.2)	30.0
Inventories	84.1	135.6
Prepaid and other current assets	8.5	14.1
Other assets	2.1	(16.4)
Increase (decrease) in:
Accounts payable - trade	(32.8)	63.4
Accounts payable - related parties	(34.0)	(132.2)
Accrued product payables	261.7	(195.7)
Accrued interest	(115.2)	(103.6)
Other current liabilities	(0.2)	40.7
Other liabilities	(18.5)	(11.4)
Net effect of changes in operating accounts	(8.0)	(201.1)
Liability for construction in progress expenditures	296.9		221.7
Significant Acquisitions and Disposals [Line Items]
Proceeds from asset sales and insurance recoveries	130.5	998.2		0		975.9		86.9	86.9		0		29.5	29.5		0		8.8		0		5.3		22.3
Gains (losses) attributable to asset sales and insurance recoveries	$ 63.9	$ 55.8		$ 0	[1]	$ 53.3	[1]	$ 52.5	$ 52.5	[2]	$ 0	[2]	$ (0.5)	$ (0.5)	[2]	$ 0	[2]	$ 8.8	[2]	$ 0	[2]	$ 3.1	[2]	$ 2.5	[2]

[1] This amount is a component of "Other income" as presented on our Unaudited Condensed Statements of Consolidated Operations.

[2] These amounts are a component of "Operating costs and expenses" as presented on our Unaudited Condensed Statements of Consolidated Operations.