Leases - Lease expense (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Lease cost:
Operating lease	[1]	$ 31	$ 27
Finance lease costs		9	3
Short-term lease		12	10
Total lease cost		$ 52	$ 40

[1] Operating lease expense includes an immaterial amount of variable expenses, offset by certain sublease rental income.