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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, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
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 derivatives are recorded | $ 4,853 | $ 4,303 | $ 14,097 | $ 12,217
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 derivatives are recorded | 31 | 83 | 113 | 248
Derivatives not designated as hedging instruments | Foreign currency forward/option contracts | Cost of sales |  |  |  |
Gain or (loss) on derivatives not designated as instruments: |  |  |  |
Derivatives not designated as hedging instruments | 0 | 1 | 0 | 3
Derivatives not designated as hedging instruments | Foreign currency forward/option contracts | Other expense (income), net |  |  |  |
Gain or (loss) on derivatives not designated as instruments: |  |  |  |
Derivatives not designated as hedging instruments | (35) | 29 | (7) | 2
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 | (15) | 23 | (32) | 74
Cash flow hedge | Foreign currency forward/option 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 | 0 | 0 | 0 | 0
Cash flow hedge | Interest rate 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 | 0 | 0 | 0 | 0
Cash flow hedge | 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 | (3) | (2) | (7) | (6)
Fair value hedges | Interest rate contracts | Cost of sales |  |  |  |
Gain or (loss) on fair value hedging relationships: |  |  |  |
Hedged items | 0 | 0 | 0 | 0
Fair value hedges | Interest rate contracts | Other expense (income), net |  |  |  |
Gain or (loss) on fair value hedging relationships: |  |  |  |
Hedged items | 1 | 3 | 3 | 3
Fair value hedges | Derivatives designated as hedging instruments | Interest rate contracts | Cost of sales |  |  |  |
Gain or (loss) on fair value hedging relationships: |  |  |  |
Derivatives designated as hedging instruments | 0 | 0 | 0 | 0
Fair value hedges | Derivatives designated as hedging instruments | Interest rate contracts | Other expense (income), net |  |  |  |
Gain or (loss) on fair value hedging relationships: |  |  |  |
Derivatives designated as hedging instruments | $ (1) | $ (3) | $ (3) | $ (3)

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