Pension and Postretirement Benefits - Summary of Defined Benefit Plans with Accumulated Benefit Obligation in Excess of Plan Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2019		Dec. 31, 2018
Pension Plans [Member] | U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 32	[1]	$ 481
Accumulated benefit obligation	32	[1]	481
Fair value of plan assets	12	[1]	450
Pension Plans [Member] | Non-U. S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	877		796
Accumulated benefit obligation	854		777
Fair value of plan assets	651		594
Other Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	17		20
Accumulated benefit obligation	$ 17		$ 20

[1] The decrease from 2018 to 2019 primarily related to our U.S. qualified plan being in a net funded position in 2019, as the plan’s fair value exceeded its accumulated benefit obligation.