Shareholders' Equity - Accumulated Other Comprehensive Income (Loss) - Components and Changes of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (1,515)	$ (1,548)	$ (1,559)	$ (1,488)
Other comprehensive income (loss) before reclassifications, net of taxes	(31)	21	(29)	(84)
Amounts reclassified into income, net of taxes	11	12	13	12
Ending balance	(1,535)	(1,515)	(1,575)	(1,559)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,038)	(1,078)	(1,067)	(987)
Other comprehensive income (loss) before reclassifications, net of taxes	(41)	40	(21)	(80)
Amounts reclassified into income, net of taxes	0	0	0	0
Ending balance	(1,079)	(1,038)	(1,088)	(1,067)
Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(559)	(571)	(563)	(574)
Other comprehensive income (loss) before reclassifications, net of taxes	0	0	0	0
Amounts reclassified into income, net of taxes	12	12	11	11
Ending balance	(548)	(559)	(552)	(563)
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	84	103	73	75
Other comprehensive income (loss) before reclassifications, net of taxes	9	(19)	(8)	(4)
Amounts reclassified into income, net of taxes	(1)	1	2	1
Ending balance	93	84	67	73
Available-for-Sale Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0	0	0	0
Other comprehensive income (loss) before reclassifications, net of taxes	(1)	0	0	0
Amounts reclassified into income, net of taxes	0	0	0	0
Ending balance	$ (1)	$ 0	$ 0	$ 0