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Significant Accounting Policies - Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Accounting Policies [Abstract]        
Cash and cash equivalents $ 4,242 $ 4,438 $ 4,357  
Restricted cash and cash equivalents 53   78  
Total cash, cash equivalents, and restricted cash and cash equivalents presented in the consolidated statements of cash flows $ 4,295 $ 4,506 $ 4,435 $ 4,223