XML 130 R82.htm IDEA: XBRL DOCUMENT
v3.24.2

Reserve for Unpaid Losses and Loss Adjustment Expenses - P&C Prior Accident Years Reserve Development (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2016 | Dec. 31, 2023
Reinsurance Contract [Axis]: Adverse Development Cover Navigators Group |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Change in Deferred Gain on Retroactive Reinsurance | $ 148 |  |  | $ 209
Reinsurance Contract [Axis]: Asbestos and Environmental | Asbestos and Environmental |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Reinsurance, Amount Retained, Per Policy |  |  | $ 1,700 |
Change in Deferred Gain on Retroactive Reinsurance | 788 |  |  |
Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Increase (Decrease) in Deferred Revenue | (61) | $ 0 |  |
Segment Reconciling Items | Asbestos and Environmental |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | 0 | 0 |  |
Segment Reconciling Items | Catastrophe |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (38) | (44) |  |
Accident and Health Insurance Product Line [Member] | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (119) | (113) |  |
Accident and Health Insurance Product Line [Member] | Segment Reconciling Items | COVID-19 related Claims |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | 20 | 20 |  |
Change in Workers Compensation Discount Including Accretion [Member] | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | 23 | 22 |  |
General Liability [Member] | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | 49 | 28 |  |
Marine | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (1) | (1) |  |
Package Business [Member] | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (1) | (8) |  |
Property Insurance [Member] | Commercial Lines | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (5) | 0 |  |
Property Insurance [Member] | Personal Lines | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (10) | 1 |  |
Professional Liability Insurance [Member] | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (7) | (3) |  |
Surety Product Line [Member] | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (22) | 12 |  |
Assumed reinsurance | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | 24 | 17 |  |
Automobiles [Member] | Commercial Lines | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | 10 | 6 |  |
Automobiles [Member] | Personal Lines | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (13) | 0 |  |
Uncollectible reinsurance | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | 0 | 12 |  |
Insurance, Other [Member] | Segment Reconciling Items |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | 0 | 32 |  |
Property, Liability and Casualty Insurance Product Line |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Prior accident year development [1] | (171) | (39) |  |
Prior accident year development before change in deferred gain | (110) | (39) |  |
Property, Liability and Casualty Insurance Product Line | Reinsurance Contract [Axis]: Adverse Development Cover Navigators Group |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Increase (Decrease) in Deferred Revenue | $ (61) | $ 0 |  |

X
- Definition Prior Year Claims and Claims Adjustment Expense, net of retroactive reinsurance benefit + References No definition available. + Details
Name: | hig_SupplementalInformationforPropertyCasualtyInsuranceUnderwritersPriorYearClaimsandClaimsAdjustmentExpensenetofretroactivereinsurancebenefit
Namespace Prefix: | hig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. + 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(26)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DeferredRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase (decrease) in deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInDeferredRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_ProductInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount per policy of risk undertaken originally by insurer that is not ceded to reinsurer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-3 + Details
Name: | us-gaap_ReinsuranceRetentionAmountRetainedPerPolicy
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 + Details
Name: | us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ReinsuranceContractAxis=Adverse Development Cover Navigators Group
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReinsuranceContractAxis=Asbestos and Environmental
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NoncatastrophicEventAxis=hig_AsbestosandEnvironmentalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_MaterialReconcilingItemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=us-gaap_CatastropheMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_ScheduleOfMalpracticeInsuranceTypeAndTierIdentifierAxis=hig_COVID19RelatedClaimsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=hig_PCCommercialLinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=hig_PCPersonalLinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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