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Related Party Transactions (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Revenues - related parties:          
Total revenue - related parties $ 15.6 $ 14.2 $ 53.7 $ 94.5  
Costs and expenses - related parties:          
Total costs and expenses - related parties 392.5 395.9 1,151.2 1,154.2  
Accounts receivable - related parties:          
Total accounts receivable - related parties 2.0   2.0   $ 3.5
Accounts payable - related parties:          
Total accounts payable - related parties 125.5   125.5   140.2
Related Party Transactions [Abstract]          
Operating costs and expenses 356.1 358.5 1,051.9 1,054.6  
General and administrative expenses 36.4 37.4 99.3 99.6  
EPCO and its privately held affiliates [Member]          
Costs and expenses - related parties:          
Total costs and expenses - related parties 297.8 285.9 837.9 802.8  
Accounts payable - related parties:          
Total accounts payable - related parties $ 106.6   106.6   116.3
Distributions:          
Total cash distributions     $ 893.1 867.4  
Relationship with Affiliates [Abstract]          
Total Number of Units (in units) 698,313,137   698,313,137    
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     $ 21.6    
EPCO and its privately held affiliates [Member] | Administrative Services Agreement [Member]          
Costs and expenses - related parties:          
Total costs and expenses - related parties $ 293.5 281.6 824.9 790.2  
Related Party Transactions [Abstract]          
Operating costs and expenses 259.3 246.6 732.0 697.6  
General and administrative expenses 34.2 35.0 92.9 92.6  
EPCO and its privately held affiliates [Member] | Related Party Operating Leases [Member]          
Costs and expenses - related parties:          
Total costs and expenses - related parties 3.8 3.8 11.1 10.7  
Unconsolidated affiliates [Member]          
Revenues - related parties:          
Total revenue - related parties 15.6 14.2 53.7 94.5  
Costs and expenses - related parties:          
Total costs and expenses - related parties 94.7 $ 110.0 313.3 $ 351.4  
Accounts receivable - related parties:          
Total accounts receivable - related parties 2.0   2.0   3.5
Accounts payable - related parties:          
Total accounts payable - related parties $ 18.9   $ 18.9   $ 23.9