Amortization of Intangible Assets Including Amortization of Software Development Intangible Assets.

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Finite And Indefinite Intangible Assets [Line Items]

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Number of Reporting Units Used in Quantitative Assessment

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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.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of foreign currency translation gain (loss) in the disposal group, including discontinued operation, recognized in the statement of income as a result of the sale or complete or substantially complete liquidation of an investment in a foreign entity.

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Amount, before tax, of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a disposal group. Excludes discontinued operations.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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Intangible Assets - Additional Information (Details)	12 Months Ended
Intangible Assets - Additional Information (Details)	Dec. 31, 2019 USD ($) Reporting_Unit	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Finite And Indefinite Intangible Assets [Line Items]
Amortization of intangibles	$ 74,609,000	$ 75,140,000	$ 90,188,000
Number of reporting units used in quantitative assessment \| Reporting_Unit	10
Goodwill impairment charges	$ 0	0	0
Amortization expense in income from continuing operations	74,600,000	75,100,000	90,200,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Estimated amortization expense in 2020	65,300,000
Estimated amortization expense in 2021	33,200,000
Estimated amortization expense in 2022	30,300,000
Estimated amortization expense in 2023	28,700,000
Estimated amortization expense in 2024	26,600,000
Trademark, net carrying amount	298,599,000	318,861,000
Indefinite lived intangible asset impairment	$ 0	0	0
Customer relationships
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Weighted-average amortization period	18 years 3 months 18 days
Trademark, net carrying amount	$ 186,863,000	164,241,000
Trademarks
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Weighted-average amortization period	8 years 6 months
Trademark, net carrying amount	$ 26,180,000	30,454,000
Indefinite lived intangible asset impairment	$ 0	0	0
Developed technology
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Weighted-average amortization period	6 years 9 months 18 days
Trademark, net carrying amount	$ 81,614,000	118,794,000
In-process research and development
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Weighted-average amortization period	5 years
Trademark, net carrying amount	$ 3,542,000	5,372,000
Grass Valley
Finite And Indefinite Intangible Assets [Line Items]
Impairment of the disposal group	521,400,000
Discontinued Operations, Held-for-sale
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Impairment of the disposal group	179,300,000
Translation exchange rates	180,400,000
Discontinued Operations, Held-for-sale \| Customer relationships
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Impairment of intangible assets	14,400,000
Discontinued Operations, Held-for-sale \| Trademarks
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
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	521,441,000	$ 0	$ 0
Goodwill impairment charges	326,100,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Impairment of the disposal group	179,300,000
Translation exchange rates	180,400,000
Discontinued Operations, Held-for-sale \| Grass Valley \| Customer relationships
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Impairment of intangible assets	14,400,000
Discontinued Operations, Held-for-sale \| Grass Valley \| Trademarks
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Impairment of intangible assets	$ 1,600,000