Name:	hig_FairValueConcentrationofRiskInvestmentsPercentofInvestedAssets
Namespace Prefix:	hig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The percent of the Company's exposure to any credit concentration risk of a single issuer greater than 10% of the Company's stockholders' equity.

No definition available.

Name:	hig_FairValueConcentrationofRiskInvestmentsPercentofStockholdersEquity
Namespace Prefix:	hig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The percent of invested assets by the Company's largest exposure by issuer.

No definition available.

Name:	hig_LargestExposurebyIssuerPercentofInvestedAssets
Namespace Prefix:	hig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The percent of invested assets by the Company's largest exposure by sector.

No definition available.

Name:	hig_LargestExposurebySectorPercentofInvestedAssets
Namespace Prefix:	hig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Name:	us-gaap_CededCreditRiskLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Trading Securities

-URI http://asc.fasb.org/extlink&oid=6526789

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Subparagraph a, f, g

-Article 7

Name:	us-gaap_FairValueConcentrationOfRiskInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Name:	invest_InvestmentIssuerAxis=country_JP
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	invest_InvestmentIssuerAxis=stpr_IL
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	invest_InvestmentSectorAxis=hig_FinancialServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	invest_InvestmentSectorAxis=us-gaap_MunicipalBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: