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Income taxes - Income tax reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Taxes |  |  |
Income before income taxes | $ 19,781 | $ 29,541 | $ 6,990
Income taxes at statutory rate (34%) | (6,726) | (10,044) | (2,377)
Adjustments that affect the taxes basis: |  |  |
Income tax benefit from interest on capital | 556 | 260 | 316
Tax incentives | 1,247 | 2,826 | 211
Equity results | 84 | 167 | (27)
Addition (reduction) of tax loss carryforward | 899 | 663 | 769
Unrecognized tax losses of the year | 197 | 115 | 215
Reclassification of cumulative adjustments to the income statement | 547 | 1,471 |
Other | (619) | (75) | (588)
Income taxes | (2,971) | (4,697) | (735)
Current tax | (2,020) | (5,663) | (3,398)
Deferred tax | $ (951) | $ 966 | $ 2,663

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