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Financial Instruments, Derivatives and Hedging Activities - Additional information - CF hedges (Details) - Cash Flow Hedging - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Gains or losses on hedging relationships |  |  |  |
Amount of Gains (Losses) Recognized in OCI | $ 13 | $ (21) | $ 1 | $ 1
Gain (loss) reclassified from accumulated OCI into earnings | (4) | 1 | (6) | (3)
Commodity Contracts |  |  |  |
Gains or losses on hedging relationships |  |  |  |
Amount of Gains (Losses) Recognized in OCI | 10 | (17) |  | 3
Commodity Contracts | Cost of sales |  |  |  |
Gains or losses on hedging relationships |  |  |  |
Gain (loss) reclassified from accumulated OCI into earnings | (5) | 2 | (3) | (3)
Foreign Currency Contracts |  |  |  |
Gains or losses on hedging relationships |  |  |  |
Amount of Gains (Losses) Recognized in OCI | 3 | (4) | 1 | (2)
Foreign Currency Contracts | Cost of sales |  |  |  |
Gains or losses on hedging relationships |  |  |  |
Gain (loss) reclassified from accumulated OCI into earnings | 1 |  | 1 |
Foreign Currency Contracts | Net sales/Cost of sales |  |  |  |
Gains or losses on hedging relationships |  |  |  |
Gain (loss) reclassified from accumulated OCI into earnings | $ 1 |  | (2) | 1
Interest Rate Contracts | Financing costs, net |  |  |  |
Gains or losses on hedging relationships |  |  |  |
Gain (loss) reclassified from accumulated OCI into earnings |  | $ (1) | $ (1) | $ (1)

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