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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
ASSETS    
Accounts receivable, allowance for credit losses $ 52.7 $ 46.5
Redeemable preferred limited partner interests:    
Series A cumulative convertible preferred units outstanding (in units) 50,412 50,138
Limited partners:    
Common units issued (in units) 2,176,379,587 2,182,308,958
Common units outstanding (in units) 2,176,379,587 2,182,308,958