Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ (38)	$ (28)
Unrecognized Tax Benefits	261
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 34