Debt - Other Outstanding Letters of Credit (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Line of Credit Facility [Line Items]
Other outstanding letters of credit	$ 83	$ 259
Committed Lines
Line of Credit Facility [Line Items]
Other outstanding letters of credit	0	29
Uncommitted Lines
Line of Credit Facility [Line Items]
Other outstanding letters of credit	$ 83	$ 230