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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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