Fair Value - Financial Instruments Carried at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Assets:
Total	$ 182	$ 122
Liabilities:
Total	481	540
Derivatives
Assets:
Derivatives	9	9
Liabilities:
Derivatives	481	540
Money market funds/mutual funds
Assets:
Money market funds/mutual funds	173	113
Level 1
Assets:
Total	173	113
Liabilities:
Total	0	0
Level 1 | Derivatives
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Level 1 | Money market funds/mutual funds
Assets:
Money market funds/mutual funds	173	113
Level 2
Assets:
Total	9	9
Liabilities:
Total	481	540
Level 2 | Derivatives
Assets:
Derivatives	9	9
Liabilities:
Derivatives	481
Level 2 | Money market funds/mutual funds
Assets:
Money market funds/mutual funds	$ 0	$ 0