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Financial Instruments, Derivatives and Hedging Activities - AOCI (Details)
$ in Millions
Jun. 30, 2019
USD ($)
Foreign Currency Contracts  
Gains or losses on hedging relationships  
Gains expected to be reclassified into earnings during the next twelve months on settled foreign currency hedges, net of tax $ 3
Treasury Lock  
Gains or losses on hedging relationships  
Loss expected to be reclassified into earnings during the next twelve months on settled T-Locks, net of tax (1)
Foreign Currency Forward Contracts  
Gains or losses on hedging relationships  
Gains expected to be reclassified during the next twelve months on settled foreign currency hedges, income tax effect (1)
Cash Flow Hedging | Commodity Contracts  
Gains or losses on hedging relationships  
Gain expected to be reclassified into earnings during the next twelve months on settled commodity hedging contracts, net of tax $ 2