Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Revenues - related parties:
Total revenue - related parties	$ 25.8	$ 55.6	$ 38.1	$ 80.3
Costs and expenses - related parties:
Total costs and expenses - related parties	362.5	408.2	758.7	758.3
Accounts receivable - related parties:
Total accounts receivable - related parties	14.2		14.2		$ 3.5
Accounts payable - related parties:
Total accounts payable - related parties	73.6		73.6		140.2
Related Party Transactions [Abstract]
Operating costs and expenses	331.4	377.7	695.8	696.1
General and administrative expenses	31.1	30.5	62.9	62.2
EPCO and its privately held affiliates [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	267.2	260.2	540.1	516.9
Accounts payable - related parties:
Total accounts payable - related parties	$ 61.4		61.4		116.3
Distributions:
Total cash distributions			$ 593.7	576.3
Relationship with Affiliates [Abstract]
Total Number of Units (in units)	698,051,729		698,051,729
Percentage of Total Units Outstanding	31.90%		31.90%
Enterprise common units pledged as security (in units)	108,222,618		108,222,618
EPCO and its privately held affiliates [Member] | Distribution Reinvestment Plan [Member]
Relationship with Affiliates [Abstract]
Gross proceeds from the sale of common units			$ 14.0
EPCO and its privately held affiliates [Member] | Administrative Services Agreement [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	$ 263.0	256.4	531.4	508.6
Related Party Transactions [Abstract]
Operating costs and expenses	233.6	228.0	472.7	451.0
General and administrative expenses	29.4	28.4	58.7	57.6
Unconsolidated affiliates [Member]
Revenues - related parties:
Total revenue - related parties	25.8	55.6	38.1	80.3
Costs and expenses - related parties:
Total costs and expenses - related parties	95.3	$ 148.0	218.6	$ 241.4
Accounts receivable - related parties:
Total accounts receivable - related parties	14.2		14.2		3.5
Accounts payable - related parties:
Total accounts payable - related parties	$ 12.2		$ 12.2		$ 23.9