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Capital Accounts, Issuances of Equity (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
Contract
shares
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
shares
Mar. 05, 2020
$ / shares
Dec. 31, 2014
Net Cash Proceeds from Sale of Common Units [Abstract]          
Net cash proceeds from the issuance of common units $ 0.0 $ 82.2 $ 538.4    
Common units issued in connection with employee compensation   45.6 39.1    
Liquidity Option Agreement [Abstract]          
Limited partner interest of Oiltanking acquired         65.90%
Percentage of capital stock we agreed to purchase under liquidity option agreement 100.00%        
Liquidity Option exercise period 90 days        
Common units issued to Skyline North Americas, Inc. in connection with settlement of Liquidity Option $ 1,297.3        
Common units acquired in connection with buyback program 186.3 81.1 30.8    
Capital expenditures $ 3,287.9 $ 4,531.7 4,223.2    
Land [Member]          
Liquidity Option Agreement [Abstract]          
Property, plant and equipment, additions     85.2    
Capital expenditures     $ 55.2    
Common units issued in connection with land acquisition (in units) | shares     1,223,242    
Phantom Unit Awards [Member]          
Liquidity Option Agreement [Abstract]          
Common units issued in connection with the vesting of phantom unit awards, net (in units) | shares 3,162,095 2,720,603 2,442,436    
Enterprise Products Partners L.P. [Member]          
Liquidity Option Agreement [Abstract]          
Closing price (in dollars per unit) | $ / shares       $ 23.67  
2019 Buyback Program [Member]          
Liquidity Option Agreement [Abstract]          
Total of common units repurchased under a buyback program (in units) | shares 8,978,317 2,909,128      
Common units acquired in connection with buyback program $ 186.3 $ 81.1      
Amount authorized under 2019 Buyback Program 2,000.0        
Remaining available capacity under the 2019 Buyback Program 1,730.0        
Legacy Buyback Program [Member]          
Liquidity Option Agreement [Abstract]          
Maximum common units authorized for repurchase under a buyback program (in units) | shares     4,000,000    
Total of common units repurchased under a buyback program (in units) | shares     1,236,800    
Common units acquired in connection with buyback program     $ 30.8    
Long-Term Incentive Plan (2008) [Member]          
Net Cash Proceeds from Sale of Common Units [Abstract]          
Common units issued in connection with employee compensation (in units) | shares   1,626,041 1,443,586    
Universal Shelf Registration [Member] | Senior Debt Obligations [Member]          
Net Cash Proceeds from Sale of Common Units [Abstract]          
Debt issued under universal shelf registration 4,250.0        
At-the-Market Registration [Member]          
Registration Statements and Equity Offerings [Line Items]          
Maximum common units authorized for issuance 2,540.0        
Net Cash Proceeds from Sale of Common Units [Abstract]          
Remaining units available for issuance 2,540.0        
Skyline Registration Rights Agreement [Member]          
Registration Statements and Equity Offerings [Line Items]          
Maximum common units authorized for issuance $ 500.0        
Liquidity Option Agreement [Abstract]          
Number of registration statements following exercise of Liquidity Option | Contract 5        
Distribution Reinvestment Plan [Member]          
Net Cash Proceeds from Sale of Common Units [Abstract]          
Remaining units available for issuance (in units) | shares 50,615,246        
Distribution Reinvestment Plan [Member] | EPCO and its privately held affiliates [Member]          
Net Cash Proceeds from Sale of Common Units [Abstract]          
Gross proceeds from the sale of common units   $ 29.0 $ 213.0    
Employee Unit Purchase Plan [Member]          
Net Cash Proceeds from Sale of Common Units [Abstract]          
Employer contribution to EUPP $ 2.4 $ 0.9      
Remaining units available for issuance (in units) | shares 3,318,607        
Distribution Reinvestment and Employee Unit Purchase Plans [Member]          
Net Cash Proceeds from Sale of Common Units [Abstract]          
Number of common units issued (in units) | shares   2,897,990 19,861,951    
Number of common units purchased on the open market and delivered to participants (in units) | shares 6,982,963 2,801,196      
Net cash proceeds from the issuance of common units   $ 82.2 $ 538.4