Leases - Schedule of Annual Maturities of Lease Liabilities (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating Leases, April 1, 2021 to December 31, 2021	$ 43
Operating Leases, 2022	48
Operating Leases, 2023	35
Operating Leases, 2024	21
Operating Leases, 2025	12
Operating Leases, 2026	10
Operating Leases, Thereafter	47
Operating Leases, Total lease payments	216
Operating Leases, Less imputed interest	(30)
Operating Leases, Total	186	$ 190
Finance Leases, April 1, 2021 to December 31, 2021	33
Finance Leases, 2022	30
Finance Leases, 2023	25
Finance Leases, 2024	8
Finance Leases, 2025	1
Finance Leases, Total lease payments	97
Finance Leases, Less imputed interest	(3)
Finance Leases, Total	$ 94	$ 98