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Litigation and Environmental Matters (Details)
$ in Millions
Jun. 30, 2016
USD ($)
Loss Contingencies  
Maximum expected cleanup exposure for individual site $ 4
Maximum expected cleanup exposure in aggregate 10
Other legal proceedings and environmental exposures  
Loss Contingencies  
Other legal proceedings or environmental exposure, minimum 35
Other legal proceedings or environmental exposure, maximum 45
Recorded reserve balance for legal proceedings and exposures $ 40