XML 53 R40.htm IDEA: XBRL DOCUMENT
v3.25.2

BUSINESS, BASIS OF PRESENTATION, AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Sep. 30, 2024 | Dec. 31, 2024
Market Risk Benefit [Line Items] |  |  |  |  |  |  |  |
Insurance policy benefits | $ 658.4 | $ 570.0 | $ 731.0 | $ 574.4 | $ 1,228.4 | $ 1,211.0 | $ 1,942.0 | $ 2,450.3
Change in fair value of market risk benefits | $ 10.9 |  | 20.9 | 5.8 | $ (4.4) | 24.7 | 45.6 |
Overstatement of embedded derivative |  | 31.7 |  |  |  |  |  | 21.6
Fixed maturities, available for sale, fair value, decrease |  |  |  |  |  |  |  | 110.4
Investments held by variable interest entities increased |  |  |  |  |  |  |  | 1.5
Adjustments |  |  |  |  |  |  |  |
Market Risk Benefit [Line Items] |  |  |  |  |  |  |  |
Insurance policy benefits |  | $ (10.1) | 4.8 |  |  |  | 15.6 | $ (21.6)
Change in fair value of market risk benefits |  |  | $ 4.8 |  |  |  | $ 15.6 |
Market Risk Benefits | Adjustments |  |  |  |  |  |  |  |
Market Risk Benefit [Line Items] |  |  |  |  |  |  |  |
Change in fair value of market risk benefits |  |  |  | $ (5.6) |  | $ (10.8) |  |

X
- Definition Embedded Derivative, Embedded Derivative, Overstatement Amount + References No definition available. + Details
Name: | cno_EmbeddedDerivativeEmbeddedDerivativeOverstatementAmount
Namespace Prefix: | cno_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fixed Maturities, Available For Sale, Fair Value, Increase (Decrease) + References No definition available. + Details
Name: | cno_FixedMaturitiesAvailableForSaleFairValueIncreaseDecrease
Namespace Prefix: | cno_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Investments Held By Variable Interest Entities, Increase (Decrease) + References No definition available. + Details
Name: | cno_InvestmentsHeldByVariableInterestEntitiesIncreaseDecrease
Namespace Prefix: | cno_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) from (increase) decrease in fair value of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. Excludes change attributable to instrument-specific credit risk. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480112/944-40-45-3 + Details
Name: | us-gaap_MarketRiskBenefitChangeInFairValueGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7B Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29G Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7B + Details
Name: | us-gaap_MarketRiskBenefitLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-14 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-11 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 11 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-11 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479868/944-20-45-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 + Details
Name: | us-gaap_PolicyholderBenefitsAndClaimsIncurredNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_RestatementAxis=srt_RestatementAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteedInsuranceContractTypeOfBenefitAxis=cno_MarketRiskBenefitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |