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Intangible Assets - Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Intangible Assets [Line Items] |  |  |
Goodwill, Gross carrying amount | $ 1,251,938 | $ 1,243,669 |
Goodwill, Accumulated Amortization | 0 | 0 |
Goodwill, Net Carrying Amount | 1,251,938 | 1,243,669 | $ 1,206,877
Finite-lived intangible assets, Gross Carrying Amount | 812,387 | 789,335 |
Finite-lived intangible assets, Accumulated Amortization | (556,379) | (490,736) |
Finite-lived intangible assets, Net Carrying Amount | 256,008 | 298,599 |
Indefinite-lived intangible assets, Carrying Amount | 31,063 | 40,906 |
Intangible assets, Gross Carrying Amount | 843,450 | 830,241 |
Intangible assets, Net Carrying Amount | 287,071 | 339,505 | $ 359,931
Trademarks |  |  |
Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets, Carrying Amount | 31,063 | 40,106 |
In-process research and development |  |  |
Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets, Carrying Amount | 0 | 800 |
Developed technologies |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 428,187 | 413,310 |
Finite-lived intangible assets, Accumulated Amortization | (369,849) | (331,696) |
Finite-lived intangible assets, Net Carrying Amount | 58,338 | 81,614 |
Customer relationships |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 295,382 | 297,595 |
Finite-lived intangible assets, Accumulated Amortization | (128,796) | (110,732) |
Finite-lived intangible assets, Net Carrying Amount | 166,586 | 186,863 |
Trademarks |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 65,861 | 56,393 |
Finite-lived intangible assets, Accumulated Amortization | (36,539) | (30,213) |
Finite-lived intangible assets, Net Carrying Amount | 29,322 | 26,180 |
In-process research and development |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 11,536 | 10,702 |
Finite-lived intangible assets, Accumulated Amortization | (9,774) | (7,160) |
Finite-lived intangible assets, Net Carrying Amount | 1,762 | 3,542 |
Backlog |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 11,421 | 11,335 |
Finite-lived intangible assets, Accumulated Amortization | (11,421) | (10,935) |
Finite-lived intangible assets, Net Carrying Amount | $ 0 | $ 400 |

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