Income Taxes -Narrative for Deferred Tax Assets and Valuation Allowance, Taxes Receivable and Payable (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Taxes receivable and payable
Valuation allowance - current period activities	$ 29	$ (24)	$ 3,492
NOLs utilized			$ 593
Deferred tax asset	2,082	3,047
Net deferred tax asset (before valuation)	2,300	3,300
Valuation allowance	248	$ 266
Federal Tax Authority
Taxes receivable and payable
Operating loss carryforwards	1,800
Current net federal tax receivable	16
State and Local Jurisdiction
Taxes receivable and payable
Operating loss carryforwards	328
Current taxes payable	13
Foreign Tax Authority
Taxes receivable and payable
Operating loss carryforwards	112
Current taxes receivable	$ 11