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Commitments and Contingencies (Details) $ in Millions | Sep. 30, 2018 USD ($)
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Components of Environmental Loss Accrual [Abstract] |
Accrual For Environmental Loss Contingencies | $ 15
Accrued Environmental Loss Contingencies Current | 9
Federal Superfund and comparable state-managed sites | 3
Formerly owned or operated sites | 11
Owned or controlled sites at which Company operations have been discontinued | 1
Maximum |
Loss Contingency, Estimate [Abstract] |
Loss contingency maximum possible loss | $ 16

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