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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 $ 478   $ 457
Measurement alternative method investments 18   22
Investments recorded using the net asset value practical expedient 10   0
Total investments in unconsolidated entities 506 $ 497 $ 479
Schedule of Equity Method Investments [Line Items]      
Revenues 1,315 1,318  
Operating expenses 1,220 1,208  
Operating income 95 110  
Net income 72 71  
Equity Method Investments      
Schedule of Equity Method Investments [Line Items]      
Revenues 1,816 1,733  
Operating expenses 1,377 1,280  
Operating income 439 453  
Other income (expense), net (4) 12  
Net income $ 435 $ 465