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Goodwill and Intangible Assets - Government Grants (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets
Gross carrying amount	$ 298.5	$ 295.0
Government grants
Finite-Lived Intangible Assets
Gross carrying amount	9.1	9.2
Government grants | Current
Finite-Lived Intangible Assets
Gross carrying amount	0.5	0.5
Government grants | Long-term
Finite-Lived Intangible Assets
Gross carrying amount	$ 8.6	$ 8.7

X

- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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+ References

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