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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Valuation allowance | $ 82 | $ 1,085 | $ 1,284 | $ 975
Derecognition of valuation allowances | 905 | 41 | $ 0 |
Operating loss carryforwards | 2,600 |  |  |
Unrecognized tax benefits | 0 | $ 0 |  |
State and Local Jurisdiction |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Corporate tax credit carryforward | 67 |  |  |
State and Local Jurisdiction | Between 2037 and 2043 |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Corporate tax credit carryforward | 49 |  |  |
Non-Korea |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Operating loss carryforwards | $ 255 |  |  |

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