Employee Benefit and Retirement Plans - Schedule of Company's Pension Cost And Supplemental Retirement Plans (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Pension Benefits | U.S.
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	10	12	28	37
Expected return on plan assets	(16)	(14)	(46)	(44)
Amortization, net	6	4	18	12
Settlements			1	0
Total income or expense	0	2	1	5
Pension Benefits | International
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	2	3	5
Interest cost	2	3	7	9
Expected return on plan assets	(2)	(4)	(5)	(10)
Amortization, net	1	1	2	2
Settlements			0	0
Total income or expense	2	2	7	6
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost	0	0	1	1
Amortization, net	(1)	(2)	(4)	(7)
Total income or expense	$ (1)	$ (2)	$ (3)	$ (6)