XML 122 R93.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Long-Duration Insurance Contracts - Policyholder Account Balances (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Policyholder Account Balance [Roll Forward] |  |  |  |  |  |
Beginning balance | [1] | $ 5,260.6 |  |  |  |
Interest credited |  | 205.7 | $ 173.4 | [2] | $ 160.0 | [2]
Ending balance |  | 5,187.0 | 5,260.6 | [1] |  |
Indexed Universal Life |  |  |  |  |  |
Policyholder Account Balance [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 47.6 | 39.1 |  |  |
Premiums received |  | 13.6 | 11.8 |  |  |
Surrenders and withdrawals |  | (1.1) | (1.0) |  |  |
Benefit payments |  | 0.0 | 0.0 |  |  |
Net transfers from (to) separate account |  | (0.6) | 0.0 |  |  |
Interest credited |  | 1.5 | 0.8 |  |  |
Other |  | (3.2) | (3.1) |  |  |
Ending balance |  | $ 57.8 | $ 47.6 |  | 39.1 |
Weighted-average crediting rate |  | 2.80% | 1.90% |  |  |
Net amount at risk |  | $ 0.0 | $ 0.0 |  |  |
Cash surrender value |  | 40.5 | 30.9 |  |  |
Experience life |  |  |  |  |  |
Policyholder Account Balance [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 64.3 | 66.2 |  |  |
Premiums received |  | (0.8) | (0.3) |  |  |
Surrenders and withdrawals |  | (3.7) | (3.0) |  |  |
Benefit payments |  | (1.7) | (1.8) |  |  |
Net transfers from (to) separate account |  | 0.0 | 0.0 |  |  |
Interest credited |  | 3.1 | 3.2 |  |  |
Other |  | 0.0 | 0.0 |  |  |
Ending balance |  | $ 61.2 | $ 64.3 |  | 66.2 |
Weighted-average crediting rate |  | 5.00% | 5.00% |  |  |
Net amount at risk |  | $ 0.0 | $ 0.0 |  |  |
Cash surrender value |  | 60.5 | 63.6 |  |  |
Fixed Account Annuities |  |  |  |  |  |
Policyholder Account Balance [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 4,591.1 | 4,532.7 |  |  |
Premiums received |  | 236.3 | 209.4 |  |  |
Surrenders and withdrawals |  | (391.8) | (281.5) |  |  |
Benefit payments |  | (75.1) | (65.9) |  |  |
Net transfers from (to) separate account |  | 23.7 | 40.5 |  |  |
Interest credited |  | 162.0 | 156.0 |  |  |
Other |  | 9.8 | (0.1) |  |  |
Ending balance |  | $ 4,556.0 | $ 4,591.1 |  | 4,532.7 |
Weighted-average crediting rate |  | 3.60% | 3.50% |  |  |
Net amount at risk |  | $ 35.9 | $ 83.9 |  |  |
Cash surrender value |  | 4,507.5 | 4,535.2 |  |  |
Fixed Indexed Account Annuities |  |  |  |  |  |
Policyholder Account Balance [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 510.3 | 522.6 |  |  |
Premiums received |  | 20.1 | 32.4 |  |  |
Surrenders and withdrawals |  | (67.0) | (40.4) |  |  |
Benefit payments |  | (3.1) | (4.1) |  |  |
Net transfers from (to) separate account |  | (8.2) | (2.5) |  |  |
Interest credited |  | 5.3 | 3.3 |  |  |
Other |  | (8.4) | (1.0) |  |  |
Ending balance |  | $ 449.0 | $ 510.3 |  | 522.6 |
Weighted-average crediting rate |  | 1.10% | 0.60% |  |  |
Net amount at risk |  | $ 0.0 | $ 0.0 |  |  |
Cash surrender value |  | 439.9 | 496.3 |  |  |
SPIA (non-life contingent) |  |  |  |  |  |
Policyholder Account Balance [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 34.4 | 37.7 |  |  |
Premiums received |  | 3.4 | 2.4 |  |  |
Surrenders and withdrawals |  | (0.4) | (0.5) |  |  |
Benefit payments |  | (5.9) | (6.3) |  |  |
Net transfers from (to) separate account |  | 0.0 | 0.0 |  |  |
Interest credited |  | 1.0 | 1.1 |  |  |
Other |  | 0.1 | 0.0 |  |  |
Ending balance |  | $ 32.6 | $ 34.4 |  | $ 37.7 |
Weighted-average crediting rate |  | 3.10% | 3.00% |  |  |
Net amount at risk |  | $ 0.0 | $ 0.0 |  |  |
Cash surrender value |  | $ 32.3 | $ 34.1 |  |  |
[1] | Recast for the adoption of ASU 2018-12. See Note 1 of the Consolidated Financial Statements
[2] | Recast for the adoption of ASU 2018-12. See Note 1 of the Consolidated Financial Statements

X
- Definition Policyholder Account Balance, Cash Surrender Value During Period + References No definition available. + Details
Name: | hmn_PolicyholderAccountBalanceCashSurrenderValueDuringPeriod
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Policyholder Account Balance, Net Amount At Risk During Period + References No definition available. + Details
Name: | hmn_PolicyholderAccountBalanceNetAmountAtRiskDuringPeriod
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Policyholder Account Balance, Premium Received, Net + References No definition available. + Details
Name: | hmn_PolicyholderAccountBalancePremiumReceivedNet
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Policyholder Account Balance, Weighted Average Crediting Rate During Period + References No definition available. + Details
Name: | hmn_PolicyholderAccountBalanceWeightedAverageCreditingRateDuringPeriod
Namespace Prefix: | hmn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of interest expense for allocation to policyholder account balance. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479868/944-20-45-2 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 13J -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-13J Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A + Details
Name: | us-gaap_InterestCreditedToPolicyholdersAccountBalances
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash outflow to policyholder account balance from benefit payment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 13J -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-13J Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A + Details
Name: | us-gaap_PolicyholderAccountBalanceBenefitPayment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in liability for policyholder account balance from change, classified as other. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A + Details
Name: | us-gaap_PolicyholderAccountBalanceIncreaseDecreaseFromOtherChange
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_PolicyholderAccountBalanceRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of decrease in liability for policyholder account balance from contract redemption and withdrawal of funds. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A + Details
Name: | us-gaap_PolicyholderAccountBalanceSurrenderAndWithdrawal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount due to policyholder. Includes, but is not limited to, unpaid policy dividend, retrospective refund, and undistributed earnings on participating business. Excludes future policy benefit and claim expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(14)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A + Details
Name: | us-gaap_PolicyholderFunds
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of transfer to (from) liability for policyholder account balance (to) from liability for separate account. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 80 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480078/944-80-55-18 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 13J -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-13J Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480109/944-80-50-2 + Details
Name: | us-gaap_TransferToFromPolicyholderAccountBalanceToFromSeparateAccount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=hmn_IndexedUniversalLifeInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=hmn_ExperienceLifeInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_FixedAnnuityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_IndexedAnnuityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=hmn_NonLifeContingentSinglePremiumImmediateAnnuityInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |