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New Accounting Pronouncements New Accounting Pronouncements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019
Sales Revenue, Net [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sales Commissions and Fees	$ 8.3
Selling and Administrative Expenses [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sales Commissions and Fees		$ 8.2	$ 7.9
Retained Earnings [Member] | Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	0.4
Accumulated Other Comprehensive Loss [Member] | AccountingStandardsUpdate201802 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (5.9)
Minimum [Member] | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset				$ 17.0
Operating Lease, Liability				17.0
Maximum [Member] | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset				19.0
Operating Lease, Liability				$ 19.0

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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-SubTopic 10
-Section 50
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Present value of lessee's discounted obligation for lease payments from operating lease.

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