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Restructuring and Related Activities - Restructuring Activities (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | $ 2.1 | $ 10.2 | $ 10.1
Document Fiscal Year Focus | 2018 |  |
Restructuring Reserve, Accrual Adjustment | $ 1.2 |  |
Restructuring Reserve [Roll Forward] |  |  |
Beginning balance | 5.1 | 2.8 | 8.8
Restructuring charges | 2.1 | 10.2 | 10.1
Payments | (6.0) | (8.3) | (16.1)
Other, including foreign currency | (0.1) | 0.4 |
Ending balance | 1.1 | 5.1 | 2.8
Severance Pay and Benefits |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Beginning balance | 4.7 | 2.4 | 7.7
Restructuring charges | 2.1 | 8.4 | 7.5
Payments | (5.9) | (6.5) | (12.8)
Other, including foreign currency | (0.1) | 0.4 |
Ending balance | 0.8 | 4.7 | 2.4
Facility Closing [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Beginning balance | 0.4 | 0.4 | 1.1
Restructuring charges | 0.0 | 1.8 | 2.6
Payments | (0.1) | (1.8) | (3.3)
Other, including foreign currency | 0.0 | 0.0 |
Ending balance | 0.3 | 0.4 | 0.4
Corporate, Non-Segment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 0.2 | 2.0 | 1.6
Audio |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 1.4 | 8.1 | 7.1
Precision Devices |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Charges | 0.5 | 0.1 | 1.4
Restructuring Charges [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges | 1.7 | 6.2 | 8.6
Cost of Goods Sold, Restructuring Charges [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges | $ 0.4 | $ 4.0 | $ 1.5

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