ACQUISITIONS AND DIVESTITURES - Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021	Dec. 27, 2021	Aug. 24, 2021
Business Acquisition [Line Items]
Goodwill	$ 8,977.5	$ 9,152.0
Provation
Business Acquisition [Line Items]
Accounts receivable	41.6
Goodwill	976.7		$ 977.0
Other intangible assets, primarily customer relationships, technology, database, and trade names	586.5
Deferred revenue, current	(50.2)
Deferred tax liabilities	(119.4)
Other assets and liabilities, net	(30.5)
Net cash consideration	1,404.7
ServiceChannel
Business Acquisition [Line Items]
Accounts receivable	10.1
Goodwill	867.6			$ 868.0
Other intangible assets, primarily customer relationships, technology, database, and trade names	342.9
Deferred revenue, current	(1.7)
Deferred tax liabilities	(41.9)
Other assets and liabilities, net	(10.7)
Net cash consideration	1,166.3
Provation and Service Channel Acquisition
Business Acquisition [Line Items]
Accounts receivable	51.7
Goodwill	1,844.3
Other intangible assets, primarily customer relationships, technology, database, and trade names	929.4
Deferred revenue, current	(51.9)
Deferred tax liabilities	(161.3)
Other assets and liabilities, net	(41.2)
Net cash consideration	$ 2,571.0