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Derivatives - Statement of Income Location and Impact of Cash Flow (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
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 | $ 4,109 | $ 4,310
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 | 96 | 48
Gain or (loss) on fair value hedging relationships: |  |
Hedged items | (2) | (5)
Derivatives designated as hedging instruments | 2 | 5
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 | 18 | 7
Interest rate 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 | (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 | 16 | 7
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 | $ 18 | $ 7

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