RESTRUCTURING ACTIVITIES (Tables)

12 Months Ended

Dec. 31, 2025

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Activities

The following table summarizes activity related to liabilities associated with restructuring activities:

(in millions)	Cost Efficiency Program(1)		GfK Integration(2)		Total
Balance as of December 31, 2023	$	36.1	$	4.7	$	40.8
Charges	20.9		77.6		98.5
Non-cash charges and other adjustments	(1.3)		—		(1.3)
Payments	(41.6)		(17.7)		(59.3)
Balance as of December 31, 2024	$	14.1	$	64.6	$	78.7
Charges	28.1		15.9		44.0
Non-cash charges and other adjustments	6.3		(1.4)		4.9
Payments	(40.0)		(34.5)		(74.5)
Balance as of December 31, 2025	$	8.5	$	44.6	$	53.1

(1)As part of the Company’s Transformation Program, the Cost Efficiency Program centers on insourced activity from, and restructured expenses with, third party providers, technology and operational process redesign, labor arbitrage and rationalization and reduction in non-client-impacting expense.

(2)GfK Integration reflects actions to drive permanent cost savings and operational efficiencies in connection with the GfK Combination.