XML 153 R95.htm IDEA: XBRL DOCUMENT v3.8.0.1

Derivatives - Credit Risk Assumed through Credit Derivatives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Credit Derivatives [Line Items]
Notional Amount	$ 12,730	$ 15,117
Fair Value	(90)	(526)
Credit derivatives
Credit Derivatives [Line Items]
Notional Amount	1,346	2,007
Fair Value	0	103
Offsetting Notional Amount	523	1,156
Offsetting Fair Value	5	3
Credit derivatives | Single name credit default swaps | A Minus | Investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount	130	81
Fair Value	$ 3	$ 0
Weighted Average Years to Maturity	5 years	4 years
Offsetting Notional Amount	$ 0	$ 6
Offsetting Fair Value	0	0
Credit derivatives | Single name credit default swaps | B | Below investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount	9
Fair Value	0
Offsetting Notional Amount	9
Offsetting Fair Value	0
Credit derivatives | Single name credit default swaps | BBB Minus | Below investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount		34
Fair Value		0
Offsetting Notional Amount		34
Offsetting Fair Value		0
Credit derivatives | Basket credit default swaps | A Minus | Investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount		1,572
Fair Value		$ 17
Weighted Average Years to Maturity		2 years
Offsetting Notional Amount		$ 979
Offsetting Fair Value		(8)
Credit derivatives | Basket credit default swaps | BBB Plus | Investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount	1,137
Fair Value	$ 2
Weighted Average Years to Maturity	3 years
Offsetting Notional Amount	$ 454
Offsetting Fair Value	(2)
Credit derivatives | Basket credit default swaps | B Plus | Below investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount	27
Fair Value	$ 2
Weighted Average Years to Maturity	3 years
Offsetting Notional Amount	$ 27
Offsetting Fair Value	0
Credit derivatives | Basket credit default swaps | A | Investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount	13
Fair Value	$ (1)
Weighted Average Years to Maturity	5 years
Offsetting Notional Amount	$ 3
Offsetting Fair Value	0
Credit derivatives | Basket credit default swaps | CCC | Below investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount	30	53
Fair Value	(6)	$ (13)
Weighted Average Years to Maturity		1 year
Offsetting Notional Amount	30	$ 53
Offsetting Fair Value	$ 7	13
Credit derivatives | Basket credit default swaps | BB Minus | Below investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount		28
Fair Value		$ 2
Weighted Average Years to Maturity		4 years
Offsetting Notional Amount		$ 28
Offsetting Fair Value		(2)
Credit derivatives | Basket credit default swaps | AA Plus | Investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount		139
Fair Value		$ (3)
Weighted Average Years to Maturity		3 years
Offsetting Notional Amount		$ 56
Offsetting Fair Value		0
Credit derivatives | Embedded credit derivatives | A Plus | Investment grade risk exposure
Credit Derivatives [Line Items]
Notional Amount		100
Fair Value		100
Offsetting Notional Amount		0
Offsetting Fair Value		$ 0

X

- Definition

Derivative, Nominal Value, Amount Offset Against Collateral, Net

+ References

No definition available.

+ Details

Name:	hig_DerivativeNominalValueAmountOffsetAgainstCollateralNet
Namespace Prefix:	hig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Average period covered by credit risk derivative contracts, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4K
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5708775-113959

+ Details

Name:	us-gaap_AverageTermOfCreditRiskDerivatives1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
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_CreditDerivativesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The net amount as of the balance sheet date of the fair value of derivative assets and derivative liabilities that in accordance with the entity's accounting policy were offset against collateral under a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41678-113959

+ Details

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

X

- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611

+ Details

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

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CreditRiskContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditDerivativesByContractTypeAxis=hig_SingleNameCreditDefaultSwapsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsAMinusRatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ExternalCreditRatingByGroupingAxis=us-gaap_ExternalCreditRatingInvestmentGradeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBRatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ExternalCreditRatingByGroupingAxis=us-gaap_ExternalCreditRatingNonInvestmentGradeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBBBMinusRatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditDerivativesByContractTypeAxis=hig_BasketCreditDefaultSwapsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBBBPlusRatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBPlusRatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsARatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsCCCRatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBBMinusRatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsAAPlusRatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditDerivativesByContractTypeAxis=hig_EmbeddedCreditDerivativeFinancialInstrumentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsAPlusRatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: