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Environmental Environmental (US Superfund Sites Narrative) (Details) - Passaic River, New Jersey [Member]
$ in Billions
12 Months Ended
Mar. 03, 2016
USD ($)
Dec. 31, 2016
Site Contingency [Line Items]    
Number of Parties included in USEPA order   70
EPA Estimated Cost $ 1.4  
Environmental Liability Percentage   1.00%