Leases - Schedule Of Maturities Of Lease Liabilities (Detail) $ in Millions	Mar. 31, 2020 USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020 (Excludes three months ended March 31, 2020)	$ 123
2021	139
2022	114
2023	86
2024	69
Thereafter	214
Total lease payments	745
Less: imputed interest	(116)
Present value of lease liabilities	629
Finance Lease, Liability, Payment, Due [Abstract]
2020 (Excludes three months ended March 31, 2020)	4
2021	4
2022	3
2023	1
2024	0
Thereafter	0
Total lease payments	12
Less: imputed interest	0
Present value of lease liabilities	$ 12