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Investments in Unconsolidated Entities - Schedule of Investments (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]          
Equity method investments $ 495   $ 495   $ 477
Measurement alternative method investments 20   20   19
Investments recorded using the net asset value practical expedient 9   9   9
Total investments in unconsolidated entities 524 $ 520 524 $ 520 $ 505
Schedule of Equity Method Investments [Line Items]          
Revenues 1,224 1,278 3,724 3,848  
Operating expenses 1,304 1,230 3,697 3,738  
Operating income (80) 48 27 110  
Other income (expense), net 1 0 3 1  
Net income (loss) (79) 4 (34) 16  
Equity Method Investments          
Schedule of Equity Method Investments [Line Items]          
Revenues 1,884 1,812 5,561 5,390  
Operating expenses 1,470 1,426 4,311 4,154  
Operating income 414 386 1,250 1,236  
Other income (expense), net 0 (13) 0 (21)  
Net income (loss) $ 414 $ 373 $ 1,250 $ 1,215