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Capital Accounts, Distributions (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Nov. 11, 2021
Sep. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Distributions to Partners [Abstract]        
Cash payments made in connection with DERs     $ 23.1 $ 20.0
Forecast [Member] | Third Quarter 2021 Distribution [Member]        
Distributions to Partners [Abstract]        
Cash distributions paid $ 989.7      
Cash payments made in connection with DERs $ 7.8      
Cash Distribution [Member] | Third Quarter 2021 Distribution [Member]        
Distributions to Partners [Abstract]        
Distribution Per Common Unit (in dollars per unit)   $ 0.45    
Annualized Distribution Per Common Unit (in dollars per unit)   $ 1.80