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Goodwill and Intangible Assets - Government Grants (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets
Gross carrying amount	$ 503.5	$ 505.7
Government grants
Finite-Lived Intangible Assets
Gross carrying amount	7.5	7.7
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	$ 7.0	$ 7.2

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- 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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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-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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