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Goodwill and other intangible assets - Summary of Other Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Other Intangible Assets, Gross: |  |
Other Intangible Assets, Gross | $ 1,417,602 | $ 1,220,196
Accumulated Amortization | (563,932) | (478,598)
Other Intangible Assets, Net | 853,670 | 741,598
Patents |  |
Other Intangible Assets, Gross: |  |
Other Intangible Assets, Gross | 29,304 | 29,303
Accumulated Amortization | (19,549) | (17,889)
Customer lists |  |
Other Intangible Assets, Gross: |  |
Other Intangible Assets, Gross | 1,282,689 | 1,092,232
Accumulated Amortization | (493,778) | (417,034)
Trade names |  |
Other Intangible Assets, Gross: |  |
Other Intangible Assets, Gross | 41,836 | 34,220
Accumulated Amortization | (18,845) | (15,892)
Proprietary technology |  |
Other Intangible Assets, Gross: |  |
Other Intangible Assets, Gross | 56,857 | 57,720
Accumulated Amortization | (29,013) | (25,113)
Other |  |
Other Intangible Assets, Gross: |  |
Other Intangible Assets, Gross | 6,916 | 6,721
Accumulated Amortization | $ (2,747) | $ (2,670)

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