LITIGATION AND OTHER LEGAL PROCEEDINGS - NARRATIVE (Details) $ in Millions			5 Months Ended	12 Months Ended
	Mar. 25, 2022 policyholder	Apr. 09, 2019 trust_agreement	May 31, 2022 state	Dec. 31, 2022 USD ($) individual	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Number of trust agreements | trust_agreement		4
Number of policyholders | policyholder	2,000
Number of states participating in examination of compliance with unclaimed property laws | state			42
Amount of insurance-related assessment liability				$ 6.2	$ 6.8
Premium tax offset for loss contingency accruals				10.6	12.6
Insurance-related assessment, expense recognized				2.1	2.7	$ 2.9
Operating leases and other contractual agreements, expense				$ 86.4	76.3	$ 74.9
Former Chief Executive Officers
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Number of Company's former chief executive officers' retirement benefits guaranteed by subsidiaries | individual				2
Deferred compensation arrangement with individual, recorded liability				$ 20.5	$ 21.2