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Income Taxes (Tax Loss and Credit Carryforwards Expirations) (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Income Tax Disclosure [Abstract] |
2019 | $ 27
2020 | 22
2021 | 82
2022 | 11
2023 | 14
Thereafter | 211
Unlimited | $ 145

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