Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenues - related parties:
Total revenue - related parties	$ 9.4	$ 5.7	$ 23.6	$ 21.7
Costs and expenses - related parties:
Operating costs and expenses	300.2	306.5	624.3	631.5
General and administrative expenses	32.8	33.2	67.6	65.7
Total costs and expenses - related parties	333.0	339.7	691.9	697.2
Accounts receivable - related parties:
Total accounts receivable - related parties	7.8		7.8		$ 5.6
Accounts payable - related parties:
Total accounts payable - related parties	97.0		97.0		149.5
EPCO and its privately held affiliates [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	282.5	277.1	574.7	563.1
Accounts receivable - related parties:
Total accounts receivable - related parties	2.3		2.3		1.9
Accounts payable - related parties:
Total accounts payable - related parties	94.3		94.3		139.6
Distributions:
Total cash distributions			612.2	605.5
EPCO and its privately held affiliates [Member] | Administrative Services Agreement [Member]
Costs and expenses - related parties:
Operating costs and expenses	247.1	241.9	501.8	493.1
General and administrative expenses	31.4	32.0	64.6	62.5
Total costs and expenses - related parties	278.5	273.9	566.4	555.6
EPCO and its privately held affiliates [Member] | Related Party Operating Leases [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	$ 3.3	2.9	$ 6.7	6.3
EPCO and its privately held affiliates [Member] | Common Units [Member]
Relationship with Affiliates [Abstract]
Total Number of Units (in units)	702,141,725		702,141,725
Percentage of total units outstanding	32.10%		32.10%
Enterprise common units pledged as security (in units)	92,976,464		92,976,464
Unconsolidated affiliates [Member]
Revenues - related parties:
Total revenue - related parties	$ 9.4	5.7	$ 23.6	21.7
Costs and expenses - related parties:
Total costs and expenses - related parties	50.5	$ 62.6	117.2	$ 134.1
Accounts receivable - related parties:
Total accounts receivable - related parties	5.5		5.5		3.7
Accounts payable - related parties:
Total accounts payable - related parties	$ 2.7		$ 2.7		$ 9.9