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Intangible Assets (Schedule of Intangible Assets, Excluding Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 494.5	$ 493.6
Accumulated Amortization	(439.1)	(433.9)
Net Book Value	$ 55.4	$ 59.7
Trademarks, patents, licenses and agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	7 years	7 years
Gross Carrying Amount	$ 21.9	$ 21.7
Accumulated Amortization	(10.1)	(9.3)
Net Book Value	$ 11.8	$ 12.4
Capitalized software [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	5 years	5 years
Gross Carrying Amount	$ 6.6	$ 6.4
Accumulated Amortization	(6.3)	(6.2)
Net Book Value	$ 0.3	$ 0.2
Acquired technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	5 years	5 years
Gross Carrying Amount	$ 6.1	$ 6.1
Accumulated Amortization	(6.1)	(6.1)
Net Book Value	$ 0.0	$ 0.0
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	6 years	6 years
Gross Carrying Amount	$ 459.9	$ 459.4
Accumulated Amortization	(416.6)	(412.3)
Net Book Value	$ 43.3	$ 47.1

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Accumulated amount of 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=26713463&loc=d3e16323-109275

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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/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=26713463&loc=d3e16323-109275

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- Definition

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- Definition

Amount after 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=26713463&loc=d3e16323-109275

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