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Interest Income (Expense), Net - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Net Investment Income [Line Items]      
Income $ 71,000,000 $ 13,000,000 $ 34,000,000
Interest expense on borrowings and banking fees 13,000,000 42,000,000 54,000,000
Capitalized borrowing cost 0 0 0
U.S. Treasury Bonds [Member]      
Net Investment Income [Line Items]      
Interest income (expense), net $ 1,000,000 1,000,000 3,000,000
Senior Unsecured Convertible Bonds      
Net Investment Income [Line Items]      
Non-cash accretion expense   $ 34,000,000 $ 42,000,000