Employee Benefit and Retirement Plans - Schedule of Company's Pension Cost And Supplemental Retirement Plans (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Pension Benefits | U.S.
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0
Interest cost	5	9
Expected return on plan assets	(12)	(15)
Amortization	5	6
Settlements	0	1
Total income or expense	(2)	1
Pension Benefits | International
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1
Interest cost	2	2
Expected return on plan assets	(1)	(2)
Amortization	1	1
Settlements	0	0
Total income or expense	3	2
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Amortization	(1)	(1)
Total income or expense	$ (1)	$ (1)