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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
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Tax Expense (Benefit) [Roll Forward] |  |  |
Income tax expense (benefit) | $ 2 | $ 18 | $ (3)
Net Unrealized Losses On Securities Tax Effect | (47) | (3) | 3
Valuation Allowances And Reserves Charged To Equity | 41 | 1 | 3
Income Tax Effects Allocated Directly to Equity | (6) | (2) | 1
Change in retirement benefits Tax Effect | 0 | 0 | 0
Credit Risk Changes to Fair Value Options Tax Effect | 0 | 0 | 0
Income Tax Effects Allocated Directly to Equity, Other | $ (4) | $ 16 | $ (1)

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- Definition The sum of the tax effects of all items occurring during the period that have been charged or credited directly to other comprehensive income or to related components of shareholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32672-109319 + Details
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