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Investments in Unconsolidated Entities - Schedule of Investments (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]          
Equity method investments $ 448   $ 448   $ 448
Measurement alternative method investments 4   4   4
Investments recorded using the net asset value practical expedient 9   9   9
Total investments in unconsolidated entities 461 $ 457 461 $ 457 $ 461
Schedule of Equity Method Investments [Line Items]          
Revenues 927 957 1,877 1,942  
Operating expenses 891 923 1,789 1,881  
Operating income 36 34 88 61  
Net income 18 5 42 20  
Equity method investments          
Schedule of Equity Method Investments [Line Items]          
Revenues 1,821 1,762 3,663 3,564  
Operating expenses 1,413 1,357 2,828 2,717  
Operating income 408 405 835 847  
Other income (expense), net 8 9 (1) (7)  
Net income $ 416 $ 414 $ 834 $ 840