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Restructuring and Related Activities - Costs Recognized and Remaining Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 16.3	$ 29.6	$ 16.3
Severance Pay and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	15.4	24.7	11.3
Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.9	4.9	5.0
Audience, Inc. | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9.5
Audience, Inc. | Severance Pay and Benefits | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9.0
Audience, Inc. | Contract Termination and Other Costs | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.5
Other Restructuring Actions
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6.8	8.9
Other Restructuring Actions | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3.2	0.1	8.5
Other Restructuring Actions | Cost of Goods Sold, Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3.6	8.8	7.8
Other Restructuring Actions | Severance Pay and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6.4	8.7	11.3
Other Restructuring Actions | Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0.2	$ 5.0
Other Restructuring Actions | Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0.4
Vienna Action
Restructuring Cost and Reserve [Line Items]
Restructuring charges		20.7
Vienna Action | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges		6.2
Vienna Action | Cost of Goods Sold, Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges		14.5
Vienna Action | Severance Pay and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		16.0
Vienna Action | Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 4.7
Minimum
Restructuring Cost and Reserve [Line Items]
Finite-lived intangible asset, useful life	5 years
Minimum | Patents
Restructuring Cost and Reserve [Line Items]
Finite-lived intangible asset, useful life	7 years

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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

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

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