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Intangible Assets - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($) Reporting_Unit | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Number of reporting units used in quantitative assessment | Reporting_Unit | 10 |  |
Goodwill impairment loss | $ 0 | $ 0 | $ 0
Impairment of indefinite lived intangible assets | 0 | 0 | 0
Amortization expense in income from continuing operations | 66,200,000 | 74,600,000 | 75,100,000
Amortization of intangibles | 64,395,000 | 74,609,000 | 75,140,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |
Estimated amortization expense in 2020 | 35,600,000 |  |
Estimated amortization expense in 2021 | 32,900,000 |  |
Estimated amortization expense in 2022 | 31,200,000 |  |
Estimated amortization expense in 2023 | 29,000,000.0 |  |
Estimated amortization expense in 2024 | 24,700,000 |  |
Finite-Lived Intangible Assets, Accumulated Amortization | (556,379,000) | (490,736,000) |
Trademark, net carrying amount | $ 256,008,000 | 298,599,000 |
Customer relationships |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |
Weighted-average amortization period | 18 years 2 months 12 days |  |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (128,796,000) | (110,732,000) |
Trademark, net carrying amount | 166,586,000 | 186,863,000 |
Trademarks |  |  |
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Impairment of indefinite lived intangible assets | $ 0 | 0 | 0
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |
Weighted-average amortization period | 8 years 3 months 18 days |  |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (36,539,000) | (30,213,000) |
Trademark, net carrying amount | 29,322,000 | 26,180,000 |
Trademarks | Intangible Assets, Amortization Period |  |  |
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Amortization of intangibles | 1,800,000 |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |
Trademark, net carrying amount | $ 7,800,000 |  |
Developed technologies |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |
Weighted-average amortization period | 6 years 9 months 18 days |  |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (369,849,000) | (331,696,000) |
Trademark, net carrying amount | $ 58,338,000 | 81,614,000 |
In-process research and development |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |
Weighted-average amortization period | 5 years |  |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (9,774,000) | (7,160,000) |
Trademark, net carrying amount | 1,762,000 | 3,542,000 |
Grass Valley |  |  |
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Impairment of the disposal group | 113,000,000.0 | 521,400,000 |
Discontinued Operations, Held-for-sale |  |  |
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Impairment of the disposal group |  | 179,300,000 |
Translation exchange rates |  | 180,400,000 |
Discontinued Operations, Held-for-sale | Customer relationships |  |  |
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Impairment of intangible assets |  | 14,400,000 |
Discontinued Operations, Held-for-sale | Trademarks |  |  |
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Impairment of intangible assets |  | 1,600,000 |
Discontinued Operations, Held-for-sale | Grass Valley |  |  |
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Impairment of the disposal group | 113,007,000 | 521,441,000 | $ 0
Goodwill impairment loss |  | $ 326,100,000 |
Impairment of the disposal group | 179,300,000 |  |
Translation exchange rates | 180,400,000 |  |
Discontinued Operations, Held-for-sale | Grass Valley | Customer relationships |  |  |
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Impairment of intangible assets | 14,400,000 |  |
Discontinued Operations, Held-for-sale | Grass Valley | Trademarks |  |  |
Finite And Indefinite Intangible Assets [Line Items] |  |  |
Impairment of intangible assets | $ 1,600,000 |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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