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Goodwill and Intangible Assets - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) reportingUnit	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment on business	$ 27,369	$ 32,629	$ 0
Goodwill	1,591,474	1,531,455	1,525,000
Amortization expense	$ 156,700	185,700	156,400
Reportable segments
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment on business		32,629
Digital Media
Finite-Lived Intangible Assets [Line Items]
Number of reporting units \| reportingUnit	7
Digital Media \| Reportable segments
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment on business	$ 27,369	0
Goodwill	$ 1,065,989	996,659	942,934
Digital Media \| Reportable segments \| Digital Media Subsegment
Finite-Lived Intangible Assets [Line Items]
Number of reporting units \| reportingUnit	2
Goodwill	$ 86,900
Cybersecurity and Martech
Finite-Lived Intangible Assets [Line Items]
Number of reporting units \| reportingUnit	2
Cybersecurity and Martech \| Reportable segments
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment on business	$ 0	32,629
Goodwill	$ 525,485	$ 534,796	$ 582,066
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