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Goodwill and Intangible Assets - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items] |  |
Historical Cost | $ 1,613,922 | $ 1,275,048
Accumulated Amortization | 904,142 | 750,180
Net | $ 709,780 | $ 524,868
Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 1 year |
Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 20 years |
Trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 10 years | 10 years 2 months 12 days
Historical Cost | $ 260,715 | $ 193,202
Accumulated Amortization | 100,273 | 82,552
Net | $ 160,442 | $ 110,650
Patent and patent licenses |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 5 years 6 months | 6 years 6 months
Historical Cost | $ 67,980 | $ 67,921
Accumulated Amortization | 66,964 | 63,143
Net | $ 1,016 | $ 4,778
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 8 years | 8 years 6 months
Historical Cost | $ 848,875 | $ 630,730
Accumulated Amortization | 471,681 | 392,228
Net | $ 377,194 | $ 238,502
Customer relationships | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 4 years | 4 years
Customer relationships | Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 5 years | 5 years
Other purchased intangibles |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 4 years 3 months 18 days | 4 years 3 months 18 days
Historical Cost | $ 436,352 | $ 383,195
Accumulated Amortization | 265,224 | 212,257
Net | $ 171,128 | $ 170,938

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 926 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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