Environmental (US Superfund Sites Narrative) (Details) - Passaic River, New Jersey [Member] $ in Billions		3 Months Ended
Mar. 31, 2016 USD ($)	Mar. 31, 2019
Site Contingency [Line Items]
Number of parties included in USEPA order		70
Cost of EPA's plan estimate	$ 1.4
Environmental Liability Percentage		1.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Period Type:	duration