Employee Benefit and Retirement Plans - Schedule of Company's Pension Cost And Supplemental Retirement Plans (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Pension Benefits | U.S.
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	5	9	10	18
Expected return on plan assets	(13)	(15)	(25)	(30)
Amortization	6	6	11	12
Settlements			0	1
Total (income) expense	(2)	0	(4)	1
Pension Benefits | International
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	2	2
Interest cost	1	3	3	5
Expected return on plan assets	(1)	(1)	(2)	(3)
Amortization	1	0	2	1
Settlements			0	0
Total (income) expense	2	3	5	5
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost	0	1	0	1
Amortization	(1)	(2)	(2)	(3)
Total (income) expense	$ (1)	$ (1)	$ (2)	$ (2)