Income Tax (Provision for Income Tax Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 3	$ 47
Effective Income Tax Rate Reconciliation, Percent	3.70%	25.30%
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ (60)	$ 186