XML 63 R46.htm IDEA: XBRL DOCUMENT
v3.22.2

Fair Value of Financial Instruments - Financial Instruments Measured and Carried at Fair Value (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financial Assets |  |
Debt securities, available-for-sale | $ 5,688.0 | $ 6,239.3
Equity securities | 117.3 | 147.2
Mortgage-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 611.8 | 662.5
Other, including U.S. Treasury securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 368.6 | 365.9
Municipal bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 1,426.3 | 1,703.4
Foreign government bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 41.4 | 43.6
Corporate bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 2,150.5 | 2,388.7
Other asset-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 1,089.4 | 1,075.2
Carrying Amount |  |
Financial Assets |  |
Equity securities | 117.3 | 147.2
Short-term investments | 97.2 | 157.8
Other investments | 33.7 | 43.6
Totals | 5,936.2 | 6,587.9
Separate Account (variable annuity) assets | 2,811.2 | 3,441.0
Financial Liabilities |  |
Investment contract and policy reserves, embedded derivatives | 0.3 | 2.1
Other policyholder funds, embedded derivatives | 93.2 | 106.6
Carrying Amount | Recurring |  |
Financial Assets |  |
Debt securities, available-for-sale | 5,688.0 | 6,239.3
Carrying Amount | Mortgage-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 611.8 | 662.5
Carrying Amount | Other, including U.S. Treasury securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 368.6 | 365.9
Carrying Amount | Municipal bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 1,426.3 | 1,703.4
Carrying Amount | Foreign government bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 41.4 | 43.6
Carrying Amount | Corporate bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 2,150.5 | 2,388.7
Carrying Amount | Other asset-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 1,089.4 | 1,075.2
Fair Value |  |
Financial Assets |  |
Equity securities | 117.3 | 147.2
Short-term investments | 97.2 | 157.8
Other investments | 33.7 | 43.6
Totals | 5,936.2 | 6,587.9
Separate Account (variable annuity) assets | 2,811.2 | 3,441.0
Financial Liabilities |  |
Investment contract and policy reserves, embedded derivatives | 0.3 | 2.1
Other policyholder funds, embedded derivatives | 93.2 | 106.6
Fair Value | Recurring |  |
Financial Assets |  |
Debt securities, available-for-sale | 5,688.0 | 6,239.3
Fair Value | Mortgage-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 611.8 | 662.5
Fair Value | Other, including U.S. Treasury securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 368.6 | 365.9
Fair Value | Municipal bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 1,426.3 | 1,703.4
Fair Value | Foreign government bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 41.4 | 43.6
Fair Value | Corporate bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 2,150.5 | 2,388.7
Fair Value | Other asset-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 1,089.4 | 1,075.2
Fair Value | Level 1 |  |
Financial Assets |  |
Equity securities | 25.0 | 35.2
Short-term investments | 94.8 | 157.8
Other investments | 0.0 | 0.0
Totals | 157.4 | 225.6
Separate Account (variable annuity) assets | 2,811.2 | 3,441.0
Financial Liabilities |  |
Investment contract and policy reserves, embedded derivatives | 0.0 | 0.0
Other policyholder funds, embedded derivatives | 0.0 | 0.0
Fair Value | Level 1 | Recurring |  |
Financial Assets |  |
Debt securities, available-for-sale | 37.6 | 32.6
Fair Value | Level 1 | Mortgage-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 0.0 | 0.0
Fair Value | Level 1 | Other, including U.S. Treasury securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 24.6 | 17.7
Fair Value | Level 1 | Municipal bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 0.0 | 0.0
Fair Value | Level 1 | Foreign government bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 0.0 | 0.0
Fair Value | Level 1 | Corporate bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 13.0 | 14.9
Fair Value | Level 1 | Other asset-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 0.0 | 0.0
Fair Value | Level 2 |  |
Financial Assets |  |
Equity securities | 90.9 | 110.6
Short-term investments | 2.4 | 0.0
Other investments | 33.7 | 43.6
Totals | 5,358.8 | 5,990.9
Separate Account (variable annuity) assets | 0.0 | 0.0
Financial Liabilities |  |
Investment contract and policy reserves, embedded derivatives | 0.3 | 2.1
Other policyholder funds, embedded derivatives | 0.0 | 0.0
Fair Value | Level 2 | Recurring |  |
Financial Assets |  |
Debt securities, available-for-sale | 5,231.8 | 5,836.7
Fair Value | Level 2 | Mortgage-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 609.1 | 662.5
Fair Value | Level 2 | Other, including U.S. Treasury securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 344.0 | 348.2
Fair Value | Level 2 | Municipal bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 1,375.3 | 1,642.6
Fair Value | Level 2 | Foreign government bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 41.4 | 43.6
Fair Value | Level 2 | Corporate bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 1,867.0 | 2,163.5
Fair Value | Level 2 | Other asset-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 995.0 | 976.3
Fair Value | Level 3 |  |
Financial Assets |  |
Equity securities | 1.4 | 1.4
Short-term investments | 0.0 | 0.0
Other investments | 0.0 | 0.0
Totals | 420.0 | 371.4
Separate Account (variable annuity) assets | 0.0 | 0.0
Financial Liabilities |  |
Investment contract and policy reserves, embedded derivatives | 0.0 | 0.0
Other policyholder funds, embedded derivatives | 93.2 | 106.6
Fair Value | Level 3 | Recurring |  |
Financial Assets |  |
Debt securities, available-for-sale | 418.6 | 370.0
Fair Value | Level 3 | Mortgage-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 2.7 | 0.0
Fair Value | Level 3 | Other, including U.S. Treasury securities |  |
Financial Assets |  |
Debt securities, available-for-sale | 0.0 | 0.0
Fair Value | Level 3 | Municipal bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 51.0 | 60.8
Fair Value | Level 3 | Foreign government bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 0.0 | 0.0
Fair Value | Level 3 | Corporate bonds |  |
Financial Assets |  |
Debt securities, available-for-sale | 270.5 | 210.3
Fair Value | Level 3 | Other asset-backed securities |  |
Financial Assets |  |
Debt securities, available-for-sale | $ 94.4 | $ 98.9

X
- Definition Fair value disclosure of accrued obligation to policyholders that relates to insured events under other insurance contracts. + References No definition available. + Details
Name: | hmn_LiabilityForFuturePolicyBenefitsDerivativeInstrumentsFairValueDisclosure
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Other Investment, Fair Value Disclosure + References No definition available. + Details
Name: | hmn_OtherInvestmentFairValueDisclosure
Namespace Prefix: | hmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of the liability as of 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_OtherPolicyholderFundsDerivativeInstrumentsFairValueDisclosure
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
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI https://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 + Details
Name: | us-gaap_EquitySecuritiesFvNi
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_InvestmentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value amount of the specified investment category of assets maintained in separate accounts as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 80 -Section 50 -Paragraph 1 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=124508989&loc=d3e19393-158473 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 55 -Paragraph 15 -URI https://asc.fasb.org/extlink&oid=124504833&loc=d3e7104-158389 + Details
Name: | us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(4)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(5)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(8)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(g)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
Name: | us-gaap_ShortTermInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=hmn_OtherIncludingUsTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ForeignGovernmentDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesOtherMember
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_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
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: |

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: |