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Income Taxes Income Taxes - Effect of Income Taxes on Net Income and Stockholders' Equity (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Expense (Benefit) [Roll Forward]      
Income tax expense (benefit) $ 18 $ (3) $ 32
Net Unrealized Losses On Securities Tax Effect (3) 3 14
Valuation Allowances And Reserves Charged To Equity 1 (3) 23
Income Tax Effects Allocated Directly to Equity (2) 1 (8)
Unrealized Loss on FX Tax Effect 0 0 0
Income Tax Effects Allocated Directly to Equity, Other $ 16 $ (1) $ 24