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Investments in Unconsolidated Entities - Schedule of Investments (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]      
Equity method investments $ 451   $ 431
Measurement alternative method investments 4   8
Investments recorded using the net asset value practical expedient 10   0
Total investments in unconsolidated entities 465   $ 439
Schedule of Equity Method Investments [Line Items]      
Revenues 1,010 $ 1,023  
Operating expenses 939 939  
Operating income 71 84  
Net income 52 62  
Equity method investments      
Schedule of Equity Method Investments [Line Items]      
Revenues 1,809 1,727  
Operating expenses 1,371 1,275  
Operating income 438 452  
Other income (expense), net (4) 12  
Net income $ 434 $ 464