Pension and Postretirement Benefits (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Defined Benefit and Defined Contribution Plan Disclosure [Line Items]
Total Pension Plans Costs	$ 12.0	$ 9.9

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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