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Liabilitiesus-gaap_FairValueByLiabilityClassAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DerivativeFinancialInstrumentsLiabilitiesMemberus-gaap_FairValueByLiabilityClassAxisexplicitMemberfalsefalseMarket Approach Valuation Techniqueus-gaap_ValuationTechniqueAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MarketApproachValuationTechniqueMemberus-gaap_ValuationTechniqueAxisexplicitMemberfalsefalseMinimumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MinimumMemberus-gaap_RangeAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli0nanafalse0Stabilizer with Recordkeeping Agreements | Derivative Financial Instruments, Liabilities | Market Approach Valuation Technique | Minimum50true 3us-gaap_FairValueInputsLiabilitiesQuantitativeInformationLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Fair Value Inputs, Liabilities, Quantitative Information [Line Items]51false 4ingli_FairValueInputsActuarialAssumptionsLapsesingli_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.000.00[1],[4]falsefalsefalse2truetruefalse0.000.00falsefalsefalsenum:percentItemTypepureFair Value Inputs, Actuarial Assumptions, LapsesNo definition available.false0Actuarial Assumptions, Lapses52false 4ingli_FairValueInputsActuarialAssumptionsPolicyholderDepositsingli_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.000.00[1],[4]falsefalsefalse2truetruefalse0.000.00falsefalsefalsenum:percentItemTypepureFair Value Inputs, Actuarial Assumptions, Policyholder DepositsNo definition available.false0Actuarial Assumptions, Policyholder Deposits53false 4ingli_FairValueInputsActuarialAssumptionsLapsesUnderPercentThresholdingli_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.000.00[1],[4]falsefalsefalse2truetruefalse0.000.00falsefalsefalsenum:percentItemTypepureFair Value Inputs, Actuarial Assumptions, Lapses under Percent ThresholdNo definition available.false0Actuarial Assumptions, Lapses under percent threshold54false 4ingli_FairValueInputsActuarialAssumptionsPolicyholderDepositsUnderPercentThresholdingli_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.000.00[1],[4]falsefalsefalse2truetruefalse0.000.00falsefalsefalsenum:percentItemTypepureFair Value Inputs, Actuarial Assumptions, Policyholder Deposits under Percent ThresholdNo definition available.false0Actuarial Assumptions, Policyholder Deposits under percent threshold55false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse23false truefalseD2013Q2YTD_us-gaap_FairValueByLiabilityClassAxis_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxis_ingli_StabilizerWithRecordkeepingAgreementsMember_us-gaap_RangeAxis_us-gaap_MaximumMember_us-gaap_ValuationTechniqueAxis_us-gaap_MarketApproachValuationTechniqueMemberhttp://www.sec.gov/CIK0000837010duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseStabilizer with Recordkeeping Agreementsus-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxisxbrldihttp://xbrl.org/2006/xbrldiingli_StabilizerWithRecordkeepingAgreementsMemberus-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteeTypeAxisexplicitMemberfalsefalseDerivative Financial Instruments, Liabilitiesus-gaap_FairValueByLiabilityClassAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DerivativeFinancialInstrumentsLiabilitiesMemberus-gaap_FairValueByLiabilityClassAxisexplicitMemberfalsefalseMarket Approach Valuation Techniqueus-gaap_ValuationTechniqueAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MarketApproachValuationTechniqueMemberus-gaap_ValuationTechniqueAxisexplicitMemberfalsefalseMaximumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MaximumMemberus-gaap_RangeAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli0nanafalse0Stabilizer with Recordkeeping Agreements | Derivative Financial Instruments, Liabilities | Market Approach Valuation Technique | Maximum56true 3us-gaap_FairValueInputsLiabilitiesQuantitativeInformationLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Fair Value Inputs, Liabilities, Quantitative Information [Line Items]57false 4ingli_FairValueInputsActuarialAssumptionsLapsesingli_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.550.55[1],[4]falsefalsefalse2truetruefalse0.550.55falsefalsefalsenum:percentItemTypepureFair Value Inputs, Actuarial Assumptions, LapsesNo definition available.false0Actuarial Assumptions, Lapses58false 4ingli_FairValueInputsActuarialAssumptionsPolicyholderDepositsingli_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.600.60[1],[4]falsefalsefalse2truetruefalse0.600.60falsefalsefalsenum:percentItemTypepureFair Value Inputs, Actuarial Assumptions, Policyholder DepositsNo definition available.false0Actuarial Assumptions, Policyholder Deposits59false 4ingli_FairValueInputsActuarialAssumptionsLapsesUnderPercentThresholdingli_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.250.25[1],[4]falsefalsefalse2truetruefalse0.250.25falsefalsefalsenum:percentItemTypepureFair Value Inputs, Actuarial Assumptions, Lapses under Percent ThresholdNo definition available.false0Actuarial Assumptions, Lapses under percent threshold60false 4ingli_FairValueInputsActuarialAssumptionsPolicyholderDepositsUnderPercentThresholdingli_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse0.300.30[1],[4]falsefalsefalse2truetruefalse0.300.30falsefalsefalsenum:percentItemTypepureFair Value Inputs, Actuarial Assumptions, Policyholder Deposits under Percent ThresholdNo definition available.false0Actuarial Assumptions, Policyholder Deposits under percent threshold1Represents the range of reasonable assumptions that management has used in its fair value calculations.2Lapse rates tend to be lower during the contractual surrender charge period and higher after the surrender charge period ends; the highest lapse rates occur in the year immediately after the end of the surrender charge period. The Company makes dynamic adjustments to lower the lapse rates for contracts that are more "in the money."3Lapse rates tend to be lower during the contractual surrender charge period and higher after the surrender charge period ends; the highest lapse rates occur in the year immediately after the end of the surrender charge period. We make dynamic adjustments to lower the lapse rates for contracts that are more "in the money."4Stabilizer contracts with recordkeeping agreements have different range of lapse and policyholder deposit assumptions from Stabilizer (Investment only) and MCG contracts as shown below: Percentage of Plans Overall Range of Lapse Rates Range of Lapse Rates for 85% of Plans Overall Range of Policyholder Deposits Range of Policyholder Deposits for 85% of PlansStabilizer (Investment Only) and MCG Contracts87% 0-30% 0-15% 0-55% 0-20%Stabilizer with Recordkeeping Agreements13% 0-55% 0-25% 0-60% 0-30%Aggregate of all plans100% 0-55% 0-25% 0-60% 0-30%5Measured as a percentage of assets under management or assets under administration.falseFair Value Measurements - Significant Unobservable Inputs (Details)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.ing.us.com/role/FairValueMeasurementsSignificantUnobservableInputsDetails260