Pension and Post-retirement Benefits - Schedule of Contribution Information for Our Non-U.S. Defined Benefit Pension Plans And Other Postretirement Plans (Detail) - Pension Plans [Member] - Non-U. S. Pension Plans [Member] $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Contributions made through June 30, 2019	$ 8
Contributions expected for the remainder of 2019	5
Total contributions expected for 2019	$ 13