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Investments in Unconsolidated Entities - Schedule of Investments (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]          
Equity method investments $ 455   $ 455   $ 457
Measurement alternative method investments 18   18   22
Investments recorded using the net asset value practical expedient 10   10   0
Total investments in unconsolidated entities 483 $ 487 483 $ 487 $ 479
Schedule of Equity Method Investments [Line Items]          
Revenues 1,349 1,311 2,664 2,629  
Operating expenses 1,286 1,253 2,506 2,461  
Operating income 63 58 158 168  
Other income (expense), net 0 0 0 (1)  
Net income 39 34 111 105  
Equity Method Investments          
Schedule of Equity Method Investments [Line Items]          
Revenues 1,779 1,748 3,595 3,482  
Operating expenses 1,395 1,221 2,772 2,502  
Operating income 384 527 823 980  
Other income (expense), net (2) (2) (6) 10  
Net income $ 382 $ 525 $ 817 $ 990