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Accumulated Other Comprehensive Income (Loss) - Changes (Detail) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
AOCI roll forward        
Beginning balance   $ 7,126 $ 7,454 $ 7,070
Other comprehensive income (loss), net of tax   (86) (22) 47
Ending balance   6,864 7,126 7,454
Accumulated Other Comprehensive Income (Loss) [Member]        
AOCI roll forward        
Beginning balance   17 39 (8)
Other comprehensive income (loss) before reclassifications, net of tax (expense) benefit   (88) 6 41
Amounts reclassified from accumulated other comprehensive (income) loss, net of tax (expense) benefit   2 (28) 6
Other comprehensive income (loss), net of tax   (86) (22) 47
Ending balance   (69) 17 39
Derivative Instruments [Member]        
AOCI roll forward        
Beginning balance     (9) (24)
Other comprehensive income (loss) before reclassifications, net of tax (expense) benefit       7
Amounts reclassified from accumulated other comprehensive (income) loss, net of tax (expense) benefit   3 9 8
Other comprehensive income (loss), net of tax   3 9 15
Ending balance   3   (9)
Available-for-Sale Debt Securities [Member]        
AOCI roll forward        
Beginning balance   43 49 38
Other comprehensive income (loss) before reclassifications, net of tax (expense) benefit   (24) (6) 12
Amounts reclassified from accumulated other comprehensive (income) loss, net of tax (expense) benefit       (1)
Other comprehensive income (loss), net of tax   (24) (6) 11
Ending balance   19 43 49
Foreign Currency Translation Adjustments [Member]        
AOCI roll forward        
Beginning balance   (29) (1) (21)
Other comprehensive income (loss) before reclassifications, net of tax (expense) benefit   (65) 7 20
Amounts reclassified from accumulated other comprehensive (income) loss, net of tax (expense) benefit $ 35   (35)  
Other comprehensive income (loss), net of tax   (65) (28) 20
Ending balance   (94) (29) (1)
Post - Retirement Benefit Obligation [Member]        
AOCI roll forward        
Beginning balance   3   (1)
Other comprehensive income (loss) before reclassifications, net of tax (expense) benefit   1 5 2
Amounts reclassified from accumulated other comprehensive (income) loss, net of tax (expense) benefit   (1) (2) (1)
Other comprehensive income (loss), net of tax     3 $ 1
Ending balance   $ 3 $ 3