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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Components of Environmental Loss Accrual [Abstract]  
Accrual For Environmental Loss Contingencies $ 15
Accrued Environmental Loss Contingencies Current 7
Federal Superfund and comparable state-managed sites 4
Formerly owned or operated sites 8
Owned or controlled sites at which Company operations have been discontinued 2
Sites utilized by the company in its ongoing operations 1
Loss Contingency, Estimate [Abstract]  
Loss contingency maximum possible loss $ 8