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Accounts Payable and Other Accrued Liabilities - Rollforward of Unearned Revenue Liabilities (URL) (Details) - URL - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Contract With Customer Liability [Roll Forward]    
Balance, beginning $ 166 $ 87
Capitalization 119 89
Amortization (15) (10)
Balance, ending 270 166
Universal Life    
Contract With Customer Liability [Roll Forward]    
Balance, beginning 166 87
Capitalization 119 89
Amortization (15) (10)
Balance, ending $ 270 $ 166