Accumulated Other Comprehensive (Loss) Income - Changes (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI roll forward
Beginning balance	$ 6,864	$ 7,126
Other comprehensive income (loss), net of tax	12	(2)
Ending balance	6,808	7,146
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI roll forward
Beginning balance	(69)	17
Other comprehensive income (loss) before reclassifications, net of tax (expense) benefit	12
Other comprehensive income (loss), net of tax	12	(2)
Ending balance	(57)	$ 15
Derivative Instruments [Member]
AOCI roll forward
Beginning balance	3
Other comprehensive income (loss) before reclassifications, net of tax (expense) benefit	5
Other comprehensive income (loss), net of tax	5
Ending balance	8
Available-for-Sale Debt Securities [Member]
AOCI roll forward
Beginning balance	19
Other comprehensive income (loss) before reclassifications, net of tax (expense) benefit	5
Other comprehensive income (loss), net of tax	5
Ending balance	24
Foreign Currency Translation Adjustments [Member]
AOCI roll forward
Beginning balance	(94)
Other comprehensive income (loss) before reclassifications, net of tax (expense) benefit	2
Other comprehensive income (loss), net of tax	2
Ending balance	(92)
Post - Retirement Benefit Obligation [Member]
AOCI roll forward
Beginning balance	3
Ending balance	$ 3