Pension and Other Postretirement Benefits - Summary of Information in Curtailment or Settlement of Benefits Requiring Remeasurement, Update to Discount Rates Used to Determine Benefit Obligations of Affected Plans (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($) Employee	Sep. 30, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Increase (decrease) in other noncurrent assets	$ 94	$ 47
Action# 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of affected plan participants | Employee	4,400
Weighted average discount rate	4.63%	2.90%
Plan remeasurement date	Jul. 31, 2022
Increase to accrued pension benefits liability	$ 5
Increase (decrease) in other noncurrent assets	27
Settlement charge	$ 617
Action# 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of affected plan participants | Employee	45
Weighted average discount rate	4.63%	2.90%
Plan remeasurement date	Jul. 31, 2022
Settlement charge	$ 11
Action# 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of affected plan participants | Employee	5
Weighted average discount rate	5.71%	4.57%
Plan remeasurement date	Sep. 30, 2022
Increase to accrued pension benefits liability	$ 23
Increase (decrease) in other noncurrent assets	(12)
Settlement charge	$ 1
Action# 4 [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of affected plan participants | Employee	25
Weighted average discount rate	4.99%	2.46%
Plan remeasurement date	Sep. 30, 2022
Increase (decrease) in other noncurrent assets	$ 21
Settlement charge	$ (3)