XML 99 R84.htm IDEA: XBRL DOCUMENT
v3.25.1

INVESTMENT BORROWINGS - TERMS OF THE BORROWINGS FROM THE FHLB (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 2,188.6 | $ 2,188.8
Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | 2,188.6 |
Borrowings Due May 2025 at 4.688% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 21.8 |
Interest rate | 4.688% |
Borrowings Due June 2025 at 2.940% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 17.3 |
Interest rate | 2.94% |
Borrowings Due September 2025 at 4.690% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 125.0 |
Interest rate | 4.69% |
Borrowings Due January 2026 at 4.732% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.732% |
Borrowings Due January 2026 at 4.758% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.758% |
Borrowings Due January 2026 at 4.747% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 100.0 |
Interest rate | 4.747% |
Borrowings Due May 2026 at 4.766% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 5.0 |
Interest rate | 4.766% |
Borrowings Due May 2026 at 4.637% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 21.8 |
Interest rate | 4.637% |
Borrowings Due May 2026 at 4.610% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.61% |
Borrowings Due November 2026 at 4.814% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 10.0 |
Interest rate | 4.814% |
Borrowings Due December 2026 at 4.699% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 75.0 |
Interest rate | 4.699% |
Borrowings Due January 2027 at 4.647% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 75.0 |
Interest rate | 4.647% |
Borrowings Due January 2027 at 4.719% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.719% |
Borrowings Due January 2027 at 4.764% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.764% |
Borrowings Due February 2027 at 4.726% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 100.0 |
Interest rate | 4.726% |
Borrowings Due April 2027 at 4.617% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.617% |
Borrowings Due May 2027 at 4.627% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.627% |
Borrowings Due June 2027 at 4.710% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 100.0 |
Interest rate | 4.71% |
Borrowings Due June 2027 at 4.933% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 10.0 |
Interest rate | 4.933% |
Borrowings Due July 2027 at 4.780% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 15.5 |
Interest rate | 4.78% |
Borrowings Due July 2027 at 4.987% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.987% |
Borrowings Due July 2027 at 5.000% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 5.00% |
Borrowings Due September 2027 at 4.866% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 12.5 |
Interest rate | 4.866% |
Borrowings Due November 2027 at 4.776% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 57.7 |
Interest rate | 4.776% |
Borrowings Due December 2027 Rate at 4.773% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 100.0 |
Interest rate | 4.773% |
Borrowings Due December 2027 Rate at 4.766% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 100.0 |
Interest rate | 4.766% |
Borrowings Due December 2027 Rate at 4.790% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.79% |
Borrowings Due January 2028 at 4.748% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 75.0 |
Interest rate | 4.748% |
Borrowings Due January 2028 at 4.738% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 134.5 |
Interest rate | 4.738% |
Borrowings Due January 2028 at 4.759% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.759% |
Borrowings Due January 2028 at 4.813% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 50.0 |
Interest rate | 4.813% |
Borrowings Due January 2028 at 4.692% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 100.0 |
Interest rate | 4.692% |
Borrowings Due February 2028 at 4.789% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 100.0 |
Interest rate | 4.789% |
Borrowings Due February 2028 at 4.733% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 21.0 |
Interest rate | 4.733% |
Borrowings Due February 2028 at 4.745% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 22.0 |
Interest rate | 4.745% |
Borrowings Due February 2028 at 4.746% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 100.0 |
Interest rate | 4.746% |
Borrowings Due July 2028 at 4.810% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 27.0 |
Interest rate | 4.81% |
Borrowings Due July 2028 at 4.720% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 15.0 |
Interest rate | 4.72% |
Borrowings Due August 2028 at 4.730% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 35.0 |
Interest rate | 4.73% |
Borrowings Due September 2028 at 4.962% | Federal Home Loan Bank Advances |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment borrowings | $ 12.5 |
Interest rate | 4.962% |

X
- Definition Amounts borrowed by a wholly owned subsidiary primarily from the Federal Home Loan Bank of Indianapolis; the proceeds of which were used to purchase fixed maturity securities. + References No definition available. + Details
Name: | cno_InvestmentBorrowings
Namespace Prefix: | cno_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B + Details
Name: | us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_FederalHomeLoanBankAdvancesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueMay2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJune2025RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueSeptember2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2026RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2026RateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2026RateThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueMay2026RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueMay2026RateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueMay2026RateThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueNovember2026RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueDecember2026RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2027RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2027RateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2027RateThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueFebruary2027RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueApril2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueMay2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJune2027RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJune2027RateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJuly2027RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJuly2027RateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJuly2027RateThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueSeptember2027RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueNovember2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueDecember2027RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueDecember2027RateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueDecember2027RateThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2028RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2028RateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2028RateThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2028RateFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJanuary2028RateFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueFebruary2028RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueFebruary2028RateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueFebruary2028RateThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueFebruary2028RateFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJuly2028RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueJuly2028RateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueAugust2028RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cno_BorrowingsDueSeptember2028RateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |