v3.25.0.1
Accumulated Other Comprehensive Income - Changes in Accumulated Balances of Other Comprehensive Income (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss), Tax      
Beginning balance $ 37 $ 21  
Other comprehensive income (loss) before reclassifications (19) 3  
Less: Amount of gain (loss) reclassified from AOCI 10 (13)  
Net current period other comprehensive income (loss) (29) 16  
Ending balance 8 37 $ 21
Accumulated Other Comprehensive Income (Loss), Net of Tax      
Balance, beginning of year 6,396 5,153  
Other comprehensive income (loss) before reclassifications (17) (23)  
Less: Amount of gain (loss) reclassified from AOCI (38) 51  
Other comprehensive income (loss), net of tax 21 (74) (139)
Balance, end of year 5,158 6,396 5,153
Unrealized Gains (Losses) on Derivative Instruments      
Accumulated Other Comprehensive Income (Loss), Before Tax      
Beginning balance (13) 114  
Other comprehensive income (loss) before reclassifications 40 (63)  
Less: Amount of gain (loss) reclassified from AOCI (48) 64  
Net current period other comprehensive income (loss) 88 (127)  
Ending balance 75 (13) 114
Unrealized Gains (Losses) on Investments      
Accumulated Other Comprehensive Income (Loss), Before Tax      
Beginning balance (45) (98)  
Other comprehensive income (loss) before reclassifications 38 53  
Less: Amount of gain (loss) reclassified from AOCI 0 0  
Net current period other comprehensive income (loss) 38 53  
Ending balance (7) (45) (98)
Foreign Currency Translation      
Accumulated Other Comprehensive Income (Loss), Before Tax      
Beginning balance 206 222  
Other comprehensive income (loss) before reclassifications (76) (16)  
Less: Amount of gain (loss) reclassified from AOCI 0 0  
Net current period other comprehensive income (loss) (76) (16)  
Ending balance 130 206 222
Accumulated other comprehensive income:      
Accumulated Other Comprehensive Income (Loss), Net of Tax      
Balance, beginning of year 185 259 398
Balance, end of year $ 206 $ 185 $ 259