Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 5,815	$ 5,403	$ 4,732
Ending balance	6,411	5,815	5,403
Unrealized foreign currency translation adjustment, tax	55	(6)	19
Adjustment for pension and other postretirement benefits, tax	48	(70)	(57)
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,663)	(1,627)	(1,734)
Current year deferrals to AOCL	(325)	(36)	107
Reclassifications from AOCL to net income	0	0	0
Ending balance	(1,988)	(1,663)	(1,627)
Pension and Other Post retirement Benefit Adjustments, net of tax
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(937)	(724)	(568)
Current year deferrals to AOCL	132	(237)	(167)
Reclassifications from AOCL to net income	42	24	11
Ending balance	(763)	(937)	(724)
Unrealized Gain (Loss) on Derivatives, net of tax
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	1	1	2
Current year deferrals to AOCL	0	0	1
Reclassifications from AOCL to net income	0	0	(2)
Ending balance	1	1	1
Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(2,599)	(2,350)	(2,300)
Current year deferrals to AOCL	(193)	(273)	(59)
Reclassifications from AOCL to net income	42	24	9
Ending balance	$ (2,750)	$ (2,599)	$ (2,350)