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Derivatives - Statement of Income Location and Impact of Cash Flow (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019 | Sep. 30, 2018
Cost of sales |  |  |
Derivatives in Fair Value Hedging Relationships |  |  |
Total amounts of income and expense line items presented in the consolidated statement of income in which the effects of cash flow or fair value hedges are recorded | $ 4,188 | $ 12,811 |
Other expense (income), net |  |  |
Derivatives in Fair Value Hedging Relationships |  |  |
Total amounts of income and expense line items presented in the consolidated statement of income in which the effects of cash flow or fair value hedges are recorded | 45 | 349 |
Gain or (loss) on fair value hedging relationships: |  |  |
Hedged items | 1 | (11) |
Derivatives designated as hedging instruments | (1) | 11 |
Foreign currency forward/option contracts | Cost of sales |  |  |
Gain or (loss) on cash flow hedging relationships: |  |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income | 22 | 50 |
Interest rate swap contracts | Other expense (income), net |  |  |
Gain or (loss) on cash flow hedging relationships: |  |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income | (1) | (2) |
Cash flow hedge |  |  |
Gain or (loss) on cash flow hedging relationships: |  |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income | 21 | 48 |
Cash flow hedge | Foreign currency forward/option contracts | Cost of sales |  |  |
Gain or (loss) on cash flow hedging relationships: |  |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income | $ 22 | $ 50 |
Fair value hedges |  |  |
Gain or (loss) on fair value hedging relationships: |  |  |
Hedged items |  |  | $ (12)

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