Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Revenues - related parties:
Total revenue - related parties	$ 14.2	$ 16.0
Costs and expenses - related parties:
Operating costs and expenses	324.1	325.0
General and administrative expenses	34.8	32.5
Total costs and expenses - related parties	358.9	357.5
Accounts receivable - related parties:
Total accounts receivable - related parties	7.0		$ 5.6
Accounts payable - related parties:
Total accounts payable - related parties	85.1		149.5
EPCO and its privately held affiliates [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	292.2	286.0
Accounts receivable - related parties:
Total accounts receivable - related parties	1.8		1.9
Accounts payable - related parties:
Total accounts payable - related parties	73.3		139.6
Distributions:
Total cash distributions	306.1	302.8
EPCO and its privately held affiliates [Member] | Administrative Services Agreement [Member]
Costs and expenses - related parties:
Operating costs and expenses	254.7	251.2
General and administrative expenses	33.2	30.5
Total costs and expenses - related parties	287.9	281.7
EPCO and its privately held affiliates [Member] | Related Party Operating Leases [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	$ 3.4	3.4
EPCO and its privately held affiliates [Member] | Common Units [Member]
Relationship with Affiliates [Abstract]
Total Number of Units (in units)	702,863,875
Percentage of total units outstanding	32.20%
Enterprise common units pledged as security (in units)	92,976,464
Unconsolidated affiliates [Member]
Revenues - related parties:
Total revenue - related parties	$ 14.2	16.0
Costs and expenses - related parties:
Total costs and expenses - related parties	66.7	$ 71.5
Accounts receivable - related parties:
Total accounts receivable - related parties	5.2		3.7
Accounts payable - related parties:
Total accounts payable - related parties	$ 11.8		$ 9.9