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Income Taxes, Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Tax Narrative (Textual) |  |  |  |
Decrease in valuation allowance |  | $ 28 |  |
Liability for unrecognized tax benefits due to uncertainties with respect to sustaining refund claims |  | 239 | $ 863 |
Tax refund receivable recorded in connection with refund claims |  | 26 | 586 |
Unrecognized tax benefits if recognized that would reduce the effective tax rate |  | 190 | 708 |
Amount of decrease in unrecognized tax benefits reasonably possible in next 12 months |  | 112 |  |
Income tax benefit, tax NOL carryback provided for under CARES Act | [1] |  | 56 | $ 360
Cumulative undistributed earnings of foreign subsidiaries |  | 7,600 |  |
Foreign earnings repatriated |  | 1,000 |  |
Foreign earnings repatriated, accrued withholding tax |  | $ 51 |  |
U.S. [Member] |  |  |  |
Income Tax Narrative (Textual) |  |  |  |
Income tax benefit, tax NOL carryback provided for under CARES Act | [1] |  | 56 | 360
U.S. [Member] | Internal Revenue Service (IRS) [Member] |  |  |  |
Income Tax Narrative (Textual) |  |  |  |
Liability for unrecognized tax benefits due to uncertainties with respect to sustaining refund claims |  |  | 525 |
Tax refund receivable recorded in connection with refund claims |  |  | 525 |
Income tax benefit, tax NOL carryback provided for under CARES Act |  |  | $ 56 | $ 360
[1] | See “CARES Act” on page 123 for a discussion of significant changes in tax law in the U.S. that were enacted in 2020.

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