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Taxes (Details 2) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Changes to company's unrecognized tax benefits |  |  |  |
Balance at January 1 |  | $ 3,031 | $ 3,042 | $ 3,552
Foreign currency effects |  | 43 | 1 |
Foreign currency effects |  |  |  | (27)
Additions based on tax positions taken in current year |  | 1,853 | 245 | 154
Additions for tax positions taken in prior years |  | 1,166 | 181 | 218
Reductions for tax positions taken in prior years |  | (90) | (390) | (678)
Settlements with taxing authorities in current year |  | (1,173) | (36) | (5)
Reductions as a result of a lapse of the applicable statute of limitations |  | (2) | (12) | (172)
Balance at December 31 |  | 4,828 | 3,031 | 3,042
Income Tax Authority [Line Items] |  |  |  |
Excise and similar taxes on products and merchandise |  | 7,189 | 6,905 | 7,359
Import duties and other levies | [1] | 12,331 | 11,668 | 12,030
Total taxes other than on income |  | 12,331 | 11,668 | 12,030
United States |  |  |  |
Income Tax Authority [Line Items] |  |  |  |
Excise and similar taxes on products and merchandise |  | 4,398 | 4,335 | 4,426
Import duties and other levies |  | 11 | 9 | 4
Property and other miscellaneous taxes |  | 1,824 | 1,680 | 1,367
Payroll taxes |  | 241 | 252 | 270
Taxes on production |  | 206 | 159 | 157
Total taxes other than on income |  | 6,680 | 6,435 | 6,224
International |  |  |  |
Income Tax Authority [Line Items] |  |  |  |
Excise and similar taxes on products and merchandise |  | 2,791 | 2,570 | 2,933
Import duties and other levies |  | 45 | 33 | 40
Property and other miscellaneous taxes |  | 2,563 | 2,379 | 2,548
Payroll taxes |  | 137 | 145 | 161
Taxes on production |  | 115 | 106 | 124
Total taxes other than on income |  | $ 5,651 | $ 5,233 | $ 5,806
[1] | Includes excise, value-added and similar taxes. $7,189; $6,905; $7,359.

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- Definition The amount of excise and sales taxes included in sales and revenues, which are then deducted as a cost of sales. Includes excise taxes, which are applied to specific types of transactions or items (such as gasoline or alcohol); and sales, use and value added taxes, which are applied to a broad class of revenue-producing transactions involving a wide range of goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68080631&loc=d3e61097-111654 + Details
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- Definition A tax based on the assessed value of real estate by the local government. The tax is usually based on the value of property (including the land). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6419918&loc=d3e35301-107843 + Details
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