Income Tax (Interest Accrued Related to Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Examination [Line Items]
Interest expense (benefit) recognized on the consolidated statements of operations (1)	$ (7)	$ 0	$ 36
Interest included in other liabilities on the consolidated balance sheets	$ 22	$ 15
Operating Expense
Income Tax Examination [Line Items]
Interest expense (benefit) recognized on the consolidated statements of operations (1)			10
Current Income Tax Payable
Income Tax Examination [Line Items]
Interest expense (benefit) recognized on the consolidated statements of operations (1)			$ (26)