Restructuring and Other Charges - Narrative (Details) $ in Millions		3 Months Ended
		Mar. 31, 2024 USD ($) employee	Mar. 31, 2023 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other		$ 26.0	$ 39.6
Restructuring and other	[1]	22.4	52.3
Abandonment Of Operating Leases
Restructuring Cost and Reserve [Line Items]
Restructuring and other		5.8
Additional Restructuring Plan | Disposal Group, Held-for-sale
Restructuring Cost and Reserve [Line Items]
Restructuring and other		$ 11.1
Additional Restructuring Plan | Workforce Reduction | Disposal Group, Held-for-sale
Restructuring Cost and Reserve [Line Items]
Reduction in current workforce | employee		180
Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Cash payments related to restructuring		$ 8.0	6.4
Restructuring Plan | Disposal Group, Held-for-sale
Restructuring Cost and Reserve [Line Items]
Cash payments related to restructuring		1.3
Restructuring Plan | Disposal Group, Held-for-sale | Applications and commerce
Restructuring Cost and Reserve [Line Items]
Restructuring and other		4.5
Restructuring Plan | Disposal Group, Held-for-sale | Core platform
Restructuring Cost and Reserve [Line Items]
Restructuring and other		6.1
Restructuring Plan | Corporate Overhead | Disposal Group, Held-for-sale
Restructuring Cost and Reserve [Line Items]
Restructuring and other		$ 0.5
Restructuring Plan | Disposition Of Assets | Disposal Group, Held-for-sale
Restructuring Cost and Reserve [Line Items]
Restructuring and other			$ 21.0

[1] Costs and operating expenses include equity-based compensation expense as follows: Cost of revenue$— $0.4 Technology and development37.5 39.0 Marketing and advertising7.3 6.6 Customer care5.8 5.4 General and administrative20.4 20.2 Restructuring and other0.8 2.3 Total equity-based compensation expense$71.8 $73.9