Fair Value - Financial Instruments Carried at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets:
Derivatives	$ 67	$ 88
Mutual funds	73	60
Total	140	148
Liabilities:
Derivatives	52	186
Total	52	186
Level 1
Assets:
Derivatives	0	0
Mutual funds	73	60
Total	73	60
Liabilities:
Derivatives	0	0
Total	0	0
Level 2
Assets:
Derivatives	67	88
Mutual funds	0	0
Total	67	88
Liabilities:
Derivatives	52	186
Total	$ 52	$ 186