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Taxes - Summary of Unrecognized Income Tax Benefits and Taxes Other Than on Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Changes to company's unrecognized tax benefits |  |  |
Balance at January 1 | $ 5,018 | $ 4,987 | $ 5,070
Foreign currency effects | (1) |  |
Foreign currency effects |  | 2 | 1
Additions based on tax positions taken in current year | 194 | 253 | 94
Additions for tax positions taken in prior years | 218 | 437 | 313
Reductions for tax positions taken in prior years | (36) | (216) | (194)
Settlements with taxing authorities in current year | (18) | (429) | (78)
Reductions as a result of a lapse of the applicable statute of limitations | (87) | (16) | (219)
Balance at December 31 | 5,288 | 5,018 | 4,987
Income Tax Authority [Line Items] |  |  |
Import duties and other levies | 6,840 | 4,499 | 4,136
Total taxes other than on income | 6,840 | 4,499 | 4,136
United States |  |  |
Income Tax Authority [Line Items] |  |  |
Import duties and other levies | 7 | 7 | 2
Property and other miscellaneous taxes | 3,378 | 2,248 | 1,785
Payroll taxes | 302 | 235 | 254
Taxes on production | 628 | 317 | 355
Total taxes other than on income | 4,315 | 2,807 | 2,396
International |  |  |
Income Tax Authority [Line Items] |  |  |
Import duties and other levies | 49 | 39 | 35
Property and other miscellaneous taxes | 2,225 | 1,461 | 1,435
Payroll taxes | 113 | 117 | 125
Taxes on production | 138 | 75 | 145
Total taxes other than on income | $ 2,525 | $ 1,692 | $ 1,740

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