AGENT DEFERRED COMPENSATION PLAN - SCHEDULE OF ASSUMPTIONS USED (Details) - Unfunded Plan	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Benefit obligations:
Discount rate	5.25%	2.75%
Net periodic cost:
Discount rate	2.75%	2.50%

Deferred Compensation Arrangement With Individual, Assumptions Used Calculating Recorded Liability Benefit Obligation, Discount Rate

No definition available.

Name:	cno_DeferredCompensationArrangementWithIndividualAssumptionsUsedCalculatingRecordedLiabilityBenefitObligationDiscountRate
Namespace Prefix:	cno_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant