Restructuring and Related Activities - Restructuring Charges by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 8.9	$ 1.1	$ 9.5	$ 5.6
Restructuring and Related Cost, Incurred Cost			9.9
Severance Pay and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost			8.8
Severance Pay and Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9.4	5.8	9.9	26.7
Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost			1.1
Operating Segments | Mobile Consumer Electronics | Severance Pay and Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8.7	2.6	9.4	20.7
Operating Segments | Specialty Components | Severance Pay and Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.3	3.2	0.1	6.0
Corporate and Reconciling Items | Severance Pay and Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.4	$ 0.0	0.4	0.0
Vienna Action
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost				19.4
Vienna Action | Severance Pay and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost				14.8
Vienna Action | Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost				4.6
Restructuring Charges | Audience, Inc.
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	8.0		8.0
Restructuring Charges | Audience, Inc. | Severance Pay and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	7.2		7.2
Restructuring Charges | Audience, Inc. | Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 0.8		$ 0.8
Restructuring Charges | Vienna Action
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost				5.5
Cost of Goods Sold, Restructuring Charges | Vienna Action
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost				$ 13.9