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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)