Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Revenues - related parties:
Total revenue - related parties	$ 7.5	$ 15.6	$ 29.2	$ 53.7
Costs and expenses - related parties:
Operating costs and expenses	283.0	356.1	914.5	1,051.9
General and administrative expenses	34.0	36.4	99.7	99.3
Total costs and expenses - related parties	317.0	392.5	1,014.2	1,151.2
Accounts receivable - related parties:
Total accounts receivable - related parties	4.1		4.1		$ 2.5
Accounts payable - related parties:
Total accounts payable - related parties	121.3		121.3		162.3
EPCO and its privately held affiliates [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	283.9	297.8	847.0	837.9
Accounts receivable - related parties:
Total accounts receivable - related parties	2.2		2.2		0.0
Accounts payable - related parties:
Total accounts payable - related parties	113.8		113.8		143.7
Distributions:
Total cash distributions			908.2	893.1
EPCO and its privately held affiliates [Member] | Administrative Services Agreement [Member]
Costs and expenses - related parties:
Operating costs and expenses	247.8	259.3	740.9	732.0
General and administrative expenses	32.1	34.2	94.6	92.9
Total costs and expenses - related parties	279.9	293.5	835.5	824.9
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	3.8	$ 9.6	11.1
EPCO and its privately held affiliates [Member] | Common Units [Member]
Relationship with Affiliates [Abstract]
Total Number of Units (in units)	701,981,017		701,981,017
Percentage of total units outstanding	32.20%		32.20%
Enterprise common units pledged as security (in units)	97,322,618		97,322,618
EPCO and its privately held affiliates [Member] | Preferred Units [Member]
Relationship with Affiliates [Abstract]
Total Number of Units (in units)	15,000		15,000
Percentage of total units outstanding	30.00%		30.00%
Unconsolidated affiliates [Member]
Revenues - related parties:
Total revenue - related parties	$ 7.5	15.6	$ 29.2	53.7
Costs and expenses - related parties:
Total costs and expenses - related parties	33.1	$ 94.7	167.2	$ 313.3
Accounts receivable - related parties:
Total accounts receivable - related parties	1.9		1.9		2.5
Accounts payable - related parties:
Total accounts payable - related parties	$ 7.5		$ 7.5		$ 18.6