XML 105 R76.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Fair Value of Financial Instruments - Financial Instrument Not Carried at Fair Value (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Level 1 |  |
Financial Assets |  |
Other investments | $ 0.0 | $ 0.0
Deposit asset on reinsurance | 0.0 | 0.0
Financial Liabilities |  |
Policyholders' account balances | 0.0 | 0.0
Other policyholder funds | 0.0 | 0.0
Reverse repurchase agreements |  | 0.0
Short-term debt |  | 0.0
Long-term debt | 0.0 | 0.0
Level 2 |  |
Financial Assets |  |
Other investments | 33.8 | 0.0
Deposit asset on reinsurance | 0.0 | 0.0
Financial Liabilities |  |
Policyholders' account balances | 0.0 | 0.0
Other policyholder funds | 908.7 | 810.7
Reverse repurchase agreements |  | 73.9
Short-term debt |  | 0.0
Long-term debt | 571.4 | 240.5
Level 3 |  |
Financial Assets |  |
Other investments | 187.9 | 170.9
Deposit asset on reinsurance | 2,259.6 | 2,207.2
Financial Liabilities |  |
Policyholders' account balances | 4,861.8 | 4,940.3
Other policyholder funds | 7.3 | 52.3
Reverse repurchase agreements |  | 0.0
Short-term debt |  | 249.0
Long-term debt | 0.0 | 0.0
Carrying Value |  |
Financial Assets |  |
Other investments | 218.4 | 167.4
Deposit asset on reinsurance | 2,496.6 | 2,516.6
Financial Liabilities |  |
Policyholders' account balances | 4,996.3 | 5,039.7
Other policyholder funds | 916.0 | 863.0
Reverse repurchase agreements |  | 70.2
Short-term debt |  | 249.0
Long-term debt | 546.0 | 249.0
Fair Value |  |
Financial Assets |  |
Other investments | 221.7 | 170.9
Deposit asset on reinsurance | 2,259.6 | 2,207.2
Financial Liabilities |  |
Policyholders' account balances | 4,861.8 | 4,940.3
Other policyholder funds | 916.0 | 863.0
Reverse repurchase agreements |  | 73.9
Short-term debt |  | 249.0
Long-term debt | $ 571.4 | $ 240.5

X
- Definition Deposit Asset On Reinsurance Fair Value Disclosure + References No definition available. + Details
Name: | hmn_DepositAssetOnReinsuranceFairValueDisclosure
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair Value of the liability as of the balance sheet date to the policyholders for funds held that are returnable under the terms of insurance contracts that were not separately reported. + References No definition available. + Details
Name: | hmn_OtherPolicyholderFundsFairValueDisclosure
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Policyholder Funds Fair Value + References No definition available. + Details
Name: | hmn_PolicyholderFundsFairValue
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

X
- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
Name: | us-gaap_LongTermDebtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of investments classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_OtherInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying value of securities purchased to be resold in reverse repurchase transactions as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_SecuritiesForReverseRepurchaseAgreements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_ShorttermDebtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |