Related Party Transactions (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2012		Sep. 30, 2011	Dec. 31, 2011
Revenues - related parties:
Total revenue - related parties	$ 7.5		$ 163.9	$ 63.9		$ 558.2
Costs and expenses - related parties:
Total costs and expenses - related parties	225.8		488.4	644.2		1,365.8
Accounts receivable - related parties:
Total accounts receivable - related parties	10.4			10.4			43.5
Accounts payable - related parties:
Total accounts payable - related parties	112.6			112.6			211.6
Relationship with Affiliates [Abstract]
Dan Duncan LLC's ownership interest of general partner of Enterprise (in hundredths)	100.00%			100.00%
Related Party Transactions [Abstract]
Operating costs and expenses	203.2		458.4	573.1		1,276.7
General and administrative expenses	22.6		30.0	71.1		89.1
EPCO and affiliates [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	210.8		187.8	616.9		553.2
Accounts payable - related parties:
Total accounts payable - related parties	95.3			95.3			108.3
Relationship with Affiliates [Abstract]
Number of Units (in units)	338,930,881	[1]		338,930,881	[1]
Percentage of Total Units Outstanding (in hundredths)	37.70%			37.70%
Distributions:
Total distributions				557.7		522.8
Related Party Transactions [Abstract]
Operating costs and expenses	185.3		157.2	541.6		462.5
General and administrative expenses	25.5		30.6	75.3		90.7
Energy Transfer Equity and subsidiaries [Member]
Revenues - related parties:
Total revenue - related parties	0		95.8	0		392.7
Costs and expenses - related parties:
Total costs and expenses - related parties	0		278.8	0		769.2
Accounts receivable - related parties:
Total accounts receivable - related parties	0			0			28.4
Accounts payable - related parties:
Total accounts payable - related parties	0			0			92.6
Other unconsolidated affiliates [Member]
Revenues - related parties:
Total revenue - related parties	7.5		68.1	63.9		165.5
Costs and expenses - related parties:
Total costs and expenses - related parties	15.0		21.8	27.3		43.4
Accounts receivable - related parties:
Total accounts receivable - related parties	10.4			10.4			15.1
Accounts payable - related parties:
Total accounts payable - related parties	$ 17.3			$ 17.3			$ 10.7

[1] Includes 4,520,431 Class B units.