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Goodwill and Intangible Assets (Intangible Assets Subject to Amortization) (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |
Historical Cost | $ 1,646,323 | $ 1,613,922
Accumulated Amortization | 989,139 | 904,142
Net | $ 657,184 | $ 709,780
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 | 9 years 7 months 6 days | 10 years
Historical Cost | $ 269,782 | $ 260,715
Accumulated Amortization | 109,994 | 100,273
Net | $ 159,788 | $ 160,442
Patent and patent licenses |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 5 years 6 months | 5 years 6 months
Historical Cost | $ 67,973 | $ 67,980
Accumulated Amortization | 67,151 | 66,964
Net | $ 822 | $ 1,016
Customer relationship |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 8 years | 8 years
Historical Cost | $ 844,952 | $ 848,875
Accumulated Amortization | 514,540 | 471,681
Net | $ 330,412 | $ 377,194
Customer relationship | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 4 years | 4 years
Customer relationship | 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 | $ 463,616 | $ 436,352
Accumulated Amortization | 297,454 | 265,224
Net | $ 166,162 | $ 171,128

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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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