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Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets (subject to amortization)	$ 2,863,847	$ 2,847,520
Accumulated amortization	(993,111)	(826,519)
Net intangible assets subject to amortization	1,870,736	2,021,001
Total	2,623,719	2,762,872
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (not subject to amortization)	752,983	741,871
Patents
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets (subject to amortization)	49,396	47,872
Accumulated amortization	(37,858)	(36,697)
Purchased technology
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets (subject to amortization)	487,517	517,464
Accumulated amortization	(209,308)	(164,231)
Customer lists
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets (subject to amortization)	2,326,934	2,282,184
Accumulated amortization	$ (745,945)	$ (625,591)

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- Definition

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

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