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Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Disclosure [Abstract] |  |  |  |
Increase in income tax expense | $ 8,116 |  |  |
Effective tax rate | 28.30% | 27.50% | 25.40% |
Decrease in deferred tax liabilities | $ 1,513 |  |  |
Decrease in deferred tax assets | 226 |  |  |
Loss carryforward | 9,850 |  |  |
Tax credit carryforward | 440 |  |  |
Carry forward amount of foreign tax credit with expiration dates | 12,599 |  |  |
Existing undistributed accumulated earnings of foreign subsidiary | $ 51,300 |  |  |
Percentage of impact of unrecognized tax benefits on effective tax rate if subsequently recognized | 80.00% |  |  |
Unrecognized tax benefits | $ 5,323 | $ 5,288 | $ 5,018 | $ 4,987
Anticipated interest and penalty obligations | 112 |  |  |
Accrued benefit for interest and penalties |  | (76) |  |
Income tax benefit expense associated with interest and penalties | $ 152 | $ 19 | $ (124) |

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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details
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