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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Current assets:    
Accounts receivable, allowance for credit losses $ 35 $ 35
Redeemable preferred limited partner interests:    
Series A cumulative convertible preferred units outstanding (in units) 50,412 50,412
Partners' equity:    
Common units issued (in units) 2,171,558,354 2,168,245,238
Common units outstanding (in units) 2,171,558,354 2,168,245,238