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Severance, Restructuring, and Acquisition Integration Activities Severance, Restructuring, and Acquisition Integration Activities - Additional Information (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended | 24 Months Ended | 27 Months Ended | 30 Months Ended |
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Dec. 31, 2017 USD ($) | Oct. 01, 2017 USD ($) | Jul. 02, 2017 USD ($) | Apr. 02, 2017 USD ($) | Dec. 31, 2016 USD ($) | Oct. 02, 2016 USD ($) | Jul. 03, 2016 USD ($) | Apr. 03, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) Program | Dec. 31, 2017 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs | $ 9,900,000 | $ 16,700,000 | $ 9,600,000 | $ 6,600,000 | $ 11,700,000 | $ 12,800,000 | $ 5,900,000 | $ 8,400,000 |  |  | $ 42,790,000 | $ 38,770,000 | $ 47,170,000 |  |  |  |
Cost of Sales [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  |  | 32,600,000 | 12,300,000 | 9,400,000 |  |  |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  |  | 10,000,000 | 25,700,000 | 31,700,000 |  |  |  |
Research and Development Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  |  | $ 200,000 | 800,000 | 6,100,000 |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and integration cost payable period |  |  |  |  |  |  |  |  |  |  | 60 days |  |  |  |  |  |
Industrial Manufacturing Footprint Program [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  |  | $ 30,600,000 | 17,800,000 |  | $ 48,400,000 |  | $ 34,100,000 |
Expected savings from restructuring |  |  |  |  |  |  |  |  |  | $ 13,000,000 |  |  |  |  |  |  |
Industrial Manufacturing Footprint Program [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected restructuring cost remaining |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,000,000
Industrial Restructuring Program [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  |  |  | 9,700,000 | 3,300,000 |  | $ 13,000,000 |  |
Expected savings from restructuring |  |  |  |  |  |  |  | $ 18,000,000 |  |  |  |  |  |  |  |  |
Grass Valley Restructuring Program [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  |  | 0 | 8,700,000 | 25,400,000 |  |  |  |
Expected savings from restructuring |  |  |  |  |  |  |  |  | $ 30,000,000 |  |  |  |  |  |  |  |
Productivity Improvement Program and Acquisition Integration [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,500,000 |  |  |  |
Number of restructuring programs | Program |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |
Reduction in operating expenses |  |  |  |  |  |  |  |  |  |  | $ 18,000,000 |  |  |  |  |  |
Productivity Improvement Program and Acquisition Integration [Member] | M2 FX Limited [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  |  |  | $ 2,600,000 |  |  |  |  |

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