Income Taxes - Deferred Taxes Included in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Taxes.
Other assets	$ 117	$ 152
Deferred taxes	(84)	(102)
Net deferred taxes	33	$ 50
Deferred tax benefit associated with reduction in valuation allowance	67
Deferred tax benefit associated with reduction in valuation allowance allocated to income from continuing operations	42
Deferred tax benefit associated with reduction in valuation allowance allocated to other comprehensive income	$ 25