XML 79 R63.htm IDEA: XBRL DOCUMENT
v3.23.3

Long-Duration Insurance Contracts - Discount Rates for LFPB (Details) | Sep. 30, 2023 | Sep. 30, 2022
--- | --- | ---
Whole Life | Minimum |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 1.70% | 1.70%
Current discount rate | 5.50% | 4.90%
Whole Life | Maximum |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 4.90% | 5.00%
Current discount rate | 5.90% | 5.40%
Term Life | Minimum |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 4.20% | 4.10%
Current discount rate | 5.90% | 5.50%
Term Life | Maximum |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 4.30% | 4.30%
Current discount rate | 5.90% | 5.50%
Experience Life |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 6.10% | 6.10%
Current discount rate | 5.90% | 5.50%
Limited Pay Whole Life |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 3.90% | 3.90%
Current discount rate | 5.90% | 5.40%
Supplemental health | Minimum |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 1.70% | 1.70%
Current discount rate | 5.90% | 5.40%
Supplemental health | Maximum |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 2.70% | 2.70%
Current discount rate | 6.10% | 5.80%
SPIA (life contingent) | Minimum |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 1.70% | 1.70%
Current discount rate | 5.80% | 5.40%
SPIA (life contingent) | Maximum |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |
Interest accretion rate | 4.10% | 4.00%
Current discount rate | 5.80% | 5.40%

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 No definition available. + Details
Name: | us-gaap_LiabilityForFuturePolicyBenefitByProductSegmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Current weighted-average discount rate used to measure liability for future policy benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
Name: | us-gaap_LiabilityForFuturePolicyBenefitCurrentWeightedAverageDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Original weighted-average discount rate at contract issue date used to measure liability for future policy benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
Name: | us-gaap_LiabilityForFuturePolicyBenefitWeightedAverageInterestAccretionRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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