Capitalized Computer Software, Useful Life

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Number of Joint Ventures

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Other Comprehensive Income [Line Items]

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Share-based Compensation Arrangement by Share-based Payment Award, Performance Period

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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-Topic 805
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- Definition

For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

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Amount of expense for amortization of capitalized computer software costs.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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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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Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) joint_venture	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Significant Accounting Policies [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	$ (3.5)	$ (0.2)	$ 0.8
Royalty Income [Abstract]
Royalty income	3.9	8.3	9.6
Business Combinations [Abstract]
Acquisition Costs	$ 0.2	1.8	2.6
Capitalized Computer Software [Abstract]
Software useful life	7 years
Amortization of capitalized software	$ 1.1	1.0	$ 2.0
Accumulated amortization of capitalized software costs	$ 35.4	$ 31.5
Restricted Stock [Member] \| Minimum [Member]
Restricted Stock Plan Performance Based Shares [Abstract]
Share based compensation vesting period (years)	2 years
Restricted Stock [Member] \| Maximum [Member]
Restricted Stock Plan Performance Based Shares [Abstract]
Share based compensation vesting period (years)	4 years
Restricted Stock Performance Plan [Member] \| Minimum [Member]
Restricted Stock Plan Performance Based Shares [Abstract]
Plan performance period (years)	1 year
China [Member]
Principles of Consolidation [Abstract]
Number of joint ventures \| joint_venture	2
Ownership of joint ventures (as a percent)	50.00%
Accounting Standards Update 2016-16
Significant Accounting Policies [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 2.2