Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended									1 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2012 Energy Transfer Equity [Member]	Dec. 31, 2011 Energy Transfer Equity [Member]	Dec. 31, 2010 Energy Transfer Equity [Member]	Dec. 31, 2011 Crystal Holding L.L.C. [Member]	Dec. 31, 2012 Crystal Holding L.L.C. [Member]	Dec. 31, 2011 Crystal Holding L.L.C. [Member]	Dec. 31, 2010 Crystal Holding L.L.C. [Member]	Feb. 28, 2011 Marine transportation assets [Member]	Dec. 31, 2012 Marine transportation assets [Member]	Dec. 31, 2011 Marine transportation assets [Member]	Dec. 31, 2010 Marine transportation assets [Member]	Dec. 31, 2012 West Storage Facilities [Member]	Dec. 31, 2011 West Storage Facilities [Member]	Dec. 31, 2010 West Storage Facilities [Member]	Dec. 31, 2012 Offshore assets [Member]	Dec. 31, 2011 Offshore assets [Member]	Dec. 31, 2010 Offshore assets [Member]	Dec. 31, 2012 Other Disposal of Assets [Member]	Dec. 31, 2011 Other Disposal of Assets [Member]	Dec. 31, 2010 Other Disposal of Assets [Member]
Decrease (increase) in:
Accounts receivable - trade	$ 161.5		$ (709.0)		$ (683.7)
Accounts receivable - related parties	35.3		(7.0)		2.9
Inventories	(227.8)		135.8		(437.5)
Prepaid and other current assets	(12.6)		(27.7)		(87.4)
Other assets	(39.6)		3.9		14.7
Increase (decrease) in:
Accounts payable - trade	34.1		44.2		104.7
Accounts payable - related parties	(84.3)		78.4		46.0
Accrued product payables	(422.5)		726.2		772.6
Accrued interest	12.7		35.2		25.1
Other current liabilities	(14.4)		(23.2)		52.9
Other liabilities	(24.9)		10.1		(0.7)
Net effect of changes in operating accounts	(582.5)		266.9		(190.4)
Cash payments for interest, net of $116.8, $106.7 and $47.2 capitalized in 2012, 2011 and 2010, respectively	757.3		711.4		724.1
Interest capitalized	116.8	[1]	106.7	[1]	47.2	[1]
Cash payments for federal and state income taxes	44.8		13.4		15.6
Liability for construction in progress expenditures	221.7		286.9		201.6
Significant Acquisitions and Disposals [Line Items]
Proceeds from disposal of assets	1,198.8		1,053.8		105.9		1,095.3	375.2	0	547.8	0	547.8	0	53.2	0	53.2	0	30.0	20.0	0	0	0	64.8	73.5	57.6	41.1
Gains (losses) attributable to disposal of assets	$ 86.4		$ 155.7		$ 46.7		$ 68.8	$ 27.2	$ 0	$ 129.1	$ 0	$ 129.1	$ 0	$ 3.3				$ 30.0	$ 4.7	$ 0	$ 0	$ 0	$ 56.6	$ (12.4)	$ (5.3)	$ (9.9)

[1] We capitalize interest cost incurred on funds used to construct property, plant and equipment. The capitalized interest cost is recorded as part of the asset to which it relates and is amortized over the asset's estimated useful life as a component of depreciation expense. See Note 20 for information regarding cash payments for interest.