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Commitments and Contingencies (Details)
$ in Millions
Jun. 30, 2019
USD ($)
Components of Environmental Loss Accrual [Abstract]  
Accrual For Environmental Loss Contingencies $ 19
Accrued Environmental Loss Contingencies Current 7
Federal Superfund and comparable state-managed sites 3
Formerly owned or operated sites 15
Owned or controlled sites at which Company operations have been discontinued 1
Maximum  
Loss Contingency, Estimate [Abstract]  
Loss contingency maximum possible loss $ 15