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Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 1,554,146	$ 1,498,815
Goodwill, Acquired During Period	18,065	75,908
Goodwill, Written off Related to Sale of Business Unit	(5,684)	(7,699)
Goodwill, Foreign Currency Translation Gain (Loss)	24,356	(12,156)
Goodwill, Measurement Period Adjustment	4,355	(722)
Goodwill. Ending Balance	1,595,238	1,554,146
Marketing Services | Operating Segments
Goodwill [Roll Forward]
Goodwill, Beginning Balance	507,915	501,076
Goodwill, Acquired During Period	11,881	13,845
Goodwill, Written off Related to Sale of Business Unit	(5,684)
Goodwill, Foreign Currency Translation Gain (Loss)	10,849	(7,015)
Goodwill, Measurement Period Adjustment		9
Goodwill. Ending Balance	524,961	507,915
Digital Transformation [Member] | Operating Segments
Goodwill [Roll Forward]
Goodwill, Beginning Balance	302,532	303,263
Goodwill, Acquired During Period	6,184
Goodwill, Foreign Currency Translation Gain (Loss)	1
Goodwill, Measurement Period Adjustment		(731)
Goodwill. Ending Balance	308,717	302,532
Media & Commerce | Operating Segments
Goodwill [Roll Forward]
Goodwill, Beginning Balance	413,760	416,052
Goodwill, Acquired During Period		368
Goodwill, Foreign Currency Translation Gain (Loss)	6,678	(2,660)
Goodwill. Ending Balance	420,438	413,760
Communications | Operating Segments
Goodwill [Roll Forward]
Goodwill, Beginning Balance	250,479	229,475
Goodwill, Acquired During Period		23,520
Goodwill, Foreign Currency Translation Gain (Loss)	2,433	(2,516)
Goodwill, Measurement Period Adjustment	266
Goodwill. Ending Balance	253,178	250,479
The Marketing Cloud | Operating Segments
Goodwill [Roll Forward]
Goodwill, Beginning Balance	79,460	48,949
Goodwill, Acquired During Period		38,175
Goodwill, Written off Related to Sale of Business Unit		(7,699)
Goodwill, Foreign Currency Translation Gain (Loss)	4,395	35
Goodwill, Measurement Period Adjustment	4,089
Goodwill. Ending Balance	$ 87,944	$ 79,460

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