GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Amount of Goodwill

Changes in the amount of goodwill for the twelve months ended December 31, 2024 and 2023, are as follows:  

	Workforce Solutions		U.S. Information Solutions		International		Total
	(In millions)
Balance, December 31, 2022	$	2,520.8	$	2,004.8	$	1,858.3	$	6,383.9
Acquisitions	—		—		410.4		410.4
Adjustments to initial purchase price allocation	(0.7)		1.4		2.1		2.8
Foreign currency translation	0.1		—		32.7		32.8
Balance, December 31, 2023	2,520.2		2,006.2		2,303.5		6,829.9
Adjustments to initial purchase price allocation	—		—		(68.7)		(68.7)
Foreign currency translation	(0.4)		—		(213.0)		(213.4)
Balance, December 31, 2024	$	2,519.8	$	2,006.2	$	2,021.8	$	6,547.8

Purchased Intangible Assets

Purchased intangible assets, net, recorded on our Consolidated Balance Sheets at December 31, 2024 and 2023 consisted of the following:

	December 31, 2024						December 31, 2023
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Definite-lived intangible assets:	(In millions)
Purchased data files	$	1,111.9	$	(669.5)	$	442.4	$	1,158.5	$	(604.2)	$	554.3
Customer relationships	937.7		(484.2)		453.5		1,053.5		(484.2)		569.3
Proprietary database	704.9		(227.6)		477.3		705.8		(171.5)		534.3
Acquired software and technology	217.6		(106.3)		111.3		222.5		(75.4)		147.1
Trade names, non-compete agreements and other intangible assets	49.7		(13.2)		36.5		79.6		(25.8)		53.8
Total definite-lived intangible assets	$	3,021.8	$	(1,500.8)	$	1,521.0	$	3,219.9	$	(1,361.1)	$	1,858.8

Estimated Future Amortization Expense

Estimated future amortization expense related to definite-lived purchased intangible assets at December 31, 2024 is as follows:

Years ending December 31,	Amount
	(In millions)
2025	$	245.6
2026	232.1
2027	219.0
2028	158.7
2029	147.9
Thereafter	517.7
	$	1,521.0