Accounting Policies - Restricted Cash (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounting Policies [Abstract]
Cash and Cash Equivalents	$ 801	$ 810	$ 902
Restricted Cash	109	54	83
Total Cash, Cash Equivalents and Restricted Cash	$ 910	$ 864	$ 985	$ 1,311