GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Amount of Goodwill

Changes in the amount of goodwill for the twelve months ended December 31, 2021 and 2020, are as follows:  

	Workforce Solutions		U.S. Information Solutions		International		Total
			(In millions)
Balance, December 31, 2019	$	1,023.0	$	1,411.9	$	1,873.4	$	4,308.3
Acquisitions	—		6.0		52.3		58.3
Adjustments to initial purchase price allocation	0.3		—		—		0.3
Foreign currency translation	—		—		128.9		128.9
Balance, December 31, 2020	1,023.3		1,417.9		2,054.6		4,495.8
Acquisitions	1,342.1		481.5		18.4		1,842.0
Adjustments to initial purchase price allocation	—		0.7		—		0.7
Foreign currency translation	—		—		(79.1)		(79.1)
Divestitures	—		—		(1.3)		(1.3)
Balance, December 31, 2021	$	2,365.4	$	1,900.1	$	1,992.6	$	6,258.1

Purchased Intangible Assets

Purchased intangible assets, net, recorded on our Consolidated Balance Sheets at December 31, 2021 and 2020, are as follows:

	December 31, 2021						December 31, 2020
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Definite-lived intangible assets:	(In millions)
Purchased data files	$	1,103.1	$	(466.0)	$	637.1	$	913.7	$	(399.2)	$	514.5
Proprietary database	710.2		(59.3)		650.9		148.6		(30.7)		117.9
Customer relationships	805.2		(354.9)		450.3		680.1		(331.4)		348.7
Acquired software and technology	160.0		(18.9)		141.1		115.3		(106.6)		8.7
Trade names and other intangible assets	23.9		(12.6)		11.3		14.4		(9.4)		5.0
Non-compete agreements	11.0		(3.7)		7.3		6.5		(3.5)		3.0
Total definite-lived intangible assets	$	2,813.4	$	(915.4)	$	1,898.0	$	1,878.6	$	(880.8)	$	997.8

Estimated Future Amortization Expense

Estimated future amortization expense related to definite-lived purchased intangible assets at December 31, 2021 is as follows:

Years ending December 31,	Amount
	(In millions)
2022	$	225.8
2023	218.2
2024	207.4
2025	204.2
2026	192.9
Thereafter	849.5
	$	1,898.0