Fair Value Measurements (Financial Assets Carried at Fair Value) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Assets:
Investment in equity securities	$ 165	$ 218
Cross-currency swap derivative contracts	150	415
Cross-currency swap derivative contracts	42	0
Quoted Prices in Active Market (Level 1)
Assets:
Investment in equity securities	0	3
Cross-currency swap derivative contracts	0	0
Cross-currency swap derivative contracts	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Investment in equity securities	0	0
Cross-currency swap derivative contracts	150	415
Cross-currency swap derivative contracts	42	0
Significant Unobservable Inputs (Level 3)
Assets:
Investment in equity securities	0	0
Cross-currency swap derivative contracts	0	0
Cross-currency swap derivative contracts	$ 0	$ 0