Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Change in valuation allowance	$ 29	$ (3)	$ 17
Unrecognized Tax Benefits	18
Federal
Tax Credit Carryforward, Amount	2
Operating Loss Carryforwards	22
Foreign Tax Authority
Tax Credit Carryforward, Amount	2
Operating Loss Carryforwards	188
State and Local Jurisdiction
Tax Credit Carryforward, Amount	19
Operating Loss Carryforwards	$ 722