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Income Taxes Income Taxes - Operating Loss and Tax Credit Carryforwards (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | $ 285 | $ 333
Tax Credit Carryforwards | 78 | 131
Total Operating Loss and Tax Credit Carryforwards | 363 | 464
Expiring within Five Years [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | 127 | 123
Tax Credit Carryforwards | 15 | 14
Expiring After Five Years Or Having Indefinite Expiration [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | 158 | 210
Tax Credit Carryforwards | $ 63 | $ 117

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