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Income Taxes - Carryforwards (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 02, 2019 | Dec. 31, 2018
Income Taxes [Abstract] |  |  |
U.S. foreign tax credits | $ 7,696 | $ 6,642 |
U.S. general business credits | 250 |  |
Capital Loss Carryforward | 202 |  |
State net operating losses and tax credits | 370 |  |
Foreign net operating losses and tax credits | 450 |  |
Total loss and credit carryforwards | 8,968 |  | $ 2,378
DTA Net of Valuation Allowance, U.S. foreign tax credits | 14 |  |
DTA Net of Valuation Allowance, U.S. general business tax credits | 250 |  |
DTA Net Of Valuaton Allowance U S Capital Loss | 32 |  |
DTA Net of Valuation Allowance, State net operating losses and tax credits | 50 |  |
DTA Net of Valuation Allowance, Foreign net operating losses and tax credits | 413 |  |
Total DTA, Net of Valuation Allowance, Tax Credits And Operating Loss Carryforwards | $ 759 |  |
Epiration date of U.S. foreign tax credits | 2028 |  |
Expiration date of U.S. general business credits | 2036-2038 |  |
Expiration Date Of U.S. Capital Loss | 2024 |  |
Expiration Date Of State Net Operating Loss And Tax Credit | Various |  |
Expiration date of Foreign net operating losses and tax credits | Post 2025 |  |

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