Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021		Mar. 31, 2020		Mar. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		$ (2,399)
Net other comprehensive income loss after tax in respect of acturial benefits	[1]			$ (570)
Ending Balance		(2,534)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(1,919)		(1,794)		$ (1,794)
Other comprehensive income (loss) before reclassifications		(174)		(573)
Net other comprehensive income (loss) before tax		(174)		(573)
Corresponding income tax		33				3
Net other comprehensive income loss after tax in respect of acturial benefits	[2]	(141)
Ending Balance		(2,060)		(2,364)
Derivative Financial Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(363)		(420)		(420)
Other comprehensive income (loss) before reclassifications				22
Amounts reclassified to the statements of income		9				8
Net other comprehensive income (loss) before tax		9		30
Corresponding income tax		(2)
Net other comprehensive income loss after tax in respect of acturial benefits		7	[2]	30	[1]
Ending Balance		(356)				(390)
Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(117)		(98)		(98)
Ending Balance		(117)		(98)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(2,399)		(2,312)		(2,312)
Other comprehensive income (loss) before reclassifications		(174)				(551)
Amounts reclassified to the statements of income		9				8
Net other comprehensive income (loss) before tax		(165)				(543)
Corresponding income tax		31				$ 3
Net other comprehensive income loss after tax in respect of acturial benefits		(134)	[2]	(540)	[1]
Ending Balance		$ (2,534)		$ (2,852)

[1] Amounts do not include a $10 million loss from foreign currency translation adjustments attributable to non-controlling interests.

[2] Amounts do not include a $67 million gain from foreign currency translation adjustments attributable to non-controlling interests.