Derivative Financial Instruments (Details 4) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015 party	Dec. 31, 2014 party
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash and securities pledged as collateral by counterparties	$ 9
Securities pledged as collateral to counterparties	6
Credit Derivatives
Number of counter-parties (in Party)	8alic_NumberOfCounterparties	7alic_NumberOfCounterparties
Notional amount	325	323
Credit exposure	11alic_CounterpartyCreditExposure	5alic_CounterpartyCreditExposure
Exposure, net of collateral	2	2
Gross liability fair value of contracts containing credit-risk-contingent features	10	11
Gross asset fair value of contracts containing credit-risk-contingent features and subject to MNAs	(2)	(2)
Collateral posted under MNAs for contracts containing credit-risk-contingent features	(6)	(7)
Maximum amount of additional exposure for contracts with credit-risk-contingent features if all features were triggered concurrently	2	2
A+
Credit Derivatives
Number of counter-parties (in Party)	1	1
Notional amount	104	164
Credit exposure	4	2
Exposure, net of collateral	0	1
A
Credit Derivatives
Number of counter-parties (in Party)	5	3
Notional amount	161	88
Credit exposure	7	3
Exposure, net of collateral	2	1
A-
Credit Derivatives
Number of counter-parties (in Party)	1	1
Notional amount	10	8
Credit exposure	0	0
Exposure, net of collateral	0	0
BBB+
Credit Derivatives
Number of counter-parties (in Party)	0	1
Notional amount	0	11
Credit exposure	0	0
Exposure, net of collateral	0	0
BBB
Credit Derivatives
Number of counter-parties (in Party)	1	1
Notional amount	50	52
Credit exposure	0	0
Exposure, net of collateral	$ 0	$ 0

This element represents cash and securities pledged as collateral from counterparties.

No definition available.

Name:	alic_CashAndSecuritiesPledgedAsCollateralFromCounterparties
Namespace Prefix:	alic_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents cash and securities pledged to counterparties as collateral for credit exposure.

+ References

No definition available.

+ Details

Name:	alic_CashAndSecuritiesPledgedAsCollateralToCounterparties
Namespace Prefix:	alic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of credit exposure by counterparties related to derivative contracts.

+ References

No definition available.

+ Details

Name:	alic_CounterpartyCreditExposure
Namespace Prefix:	alic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of credit exposure by counterparties net of collateral received, related to derivative contracts.

+ References

No definition available.

+ Details

Name:	alic_CreditDerivativeExposureNetOfCollateral
Namespace Prefix:	alic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of derivative asset, presented on a gross basis containing credit risk contingent features and which is subject to master netting arrangements.

+ References

No definition available.

+ Details

Name:	alic_DerivativeGrossAssetFairValueWithCreditRiskContingentFeatures
Namespace Prefix:	alic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of derivative liabilities, presented on a gross basis containing credit risk contingent features.

+ References

No definition available.

+ Details

Name:	alic_DerivativeGrossLiabilityFairValueWithCreditRiskContingentFeatures
Namespace Prefix:	alic_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The notional amount of derivative contracts for which the entity has counterparty credit exposure.

+ References

No definition available.

+ Details

Name:	alic_NotionalAmountOfCounterpartyCreditExposure
Namespace Prefix:	alic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The number of counterparties to which the entity has counterparty credit exposure related to derivative contracts.

+ References

No definition available.

+ Details

Name:	alic_NumberOfCounterparties
Namespace Prefix:	alic_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4H

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624258-113959

+ Details

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

- Definition

The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4H

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624258-113959

+ Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

Name:	us-gaap_CreditRatingStandardPoorsAxis=us-gaap_StandardPoorsBBBRatingMember
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Data Type:	na
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