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Derivatives - Net Investment Hedges (Details) - Net Investment Hedges € in Millions, $ in Millions, ₩ in Billions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 USD ($) | Mar. 31, 2017 USD ($) | Mar. 31, 2018 KRW (₩) | Mar. 31, 2018 EUR (€)
Net investment hedges |  |  |  |
Effective portion of net investment hedge reclassified out of other comprehensive income into income | $ 0 | $ 0 |  |
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument | (134) | (141) |  |
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income | (3) | 2 |  |
Foreign currency forward contracts |  |  |  |
Net investment hedges |  |  |  |
Derivative notional amount |  |  | ₩ 248 | € 150
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument | (6) | (20) |  |
Foreign currency forward contracts | Cost of sales |  |  |  |
Net investment hedges |  |  |  |
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income | (1) | 2 |  |
Foreign Currency Denominated Debt |  |  |  |
Net investment hedges |  |  |  |
Face amount of debt dedesignated as a net investment hedge | € |  |  |  | 300
Face amount of debt designated as a net investment hedge | € |  |  |  | € 4,100
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument | (128) | $ (121) |  |
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income | $ (2) |  |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition The amount of debt that was dedesignated as a hedging instrument for a net investment hedge relationship. + References No definition available. + Details
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- Definition The amount of debt that was designated as a hedging instrument for a net investment hedge relationship. + References No definition available. + Details
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- Definition The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1),(2) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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- Definition Amount, after tax, of reclassification from other comprehensive income (loss) to earnings from the sale or complete or substantially complete liquidation of an investment in a foreign entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (d)(c) -URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900 + Details
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- Definition Amount, before tax, of increase (decrease) in the cumulative translation adjustment from gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900 + Details
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