Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenues - related parties:
Total revenue - related parties	$ 24.7	$ 10.8
Costs and expenses - related parties:
Total costs and expenses - related parties	350.1	281.3
Accounts receivable - related parties:
Total accounts receivable - related parties	3.6		$ 1.8
Accounts payable - related parties:
Total accounts payable - related parties	83.0		127.3
Related Party Transactions [Abstract]
Operating costs and expenses	318.4	251.6
General and administrative expenses	31.7	29.7
EPCO and its privately held affiliates [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	256.7	243.1
Accounts payable - related parties:
Total accounts payable - related parties	43.5		99.3
Distributions:
Total cash distributions	$ 286.9	275.2
Relationship with Affiliates [Abstract]
Total Number of Units (in units)	693,530,754
Percentage of Total Units Outstanding	32.00%
Enterprise common units pledged as security (in units)	81,346,154
EPCO and its privately held affiliates [Member] | Distribution Reinvestment Plan [Member]
Relationship with Affiliates [Abstract]
Gross proceeds from the sale of common units	$ 100.0
EPCO and its privately held affiliates [Member] | Administrative Services Agreement [Member]
Costs and expenses - related parties:
Total costs and expenses - related parties	252.2	238.4
Related Party Transactions [Abstract]
Operating costs and expenses	223.0	211.6
General and administrative expenses	29.2	26.8
Unconsolidated affiliates [Member]
Revenues - related parties:
Total revenue - related parties	24.7	10.8
Costs and expenses - related parties:
Total costs and expenses - related parties	93.4	$ 38.2
Accounts receivable - related parties:
Total accounts receivable - related parties	3.6		1.8
Accounts payable - related parties:
Total accounts payable - related parties	$ 39.5		$ 28.0