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Basis of Presentation - Prior Year Reclassification (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Research and Development and Engineering Expense [Member]
Change in Accounting Estimate [Line Items]
Prior Period Reclassification Adjustment	$ 1.3	$ 2.6
General and Administrative Expense [Member]
Change in Accounting Estimate [Line Items]
Prior Period Reclassification Adjustment	1.2	2.3
Selling Expense [Member]
Change in Accounting Estimate [Line Items]
Prior Period Reclassification Adjustment	$ 0.1	$ 0.3

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- Definition

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.

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- Definition

The amount of a reclassification adjustment made to prior period financial statement amounts.

+ References

No definition available.

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