XML 62 R59.htm IDEA: XBRL DOCUMENT v2.4.1.9
Derivative Financial Instruments - Fair Value of Outstanding Derivative Contracts in Condensed Consolidated Balance Sheets (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Sep. 30, 2014
Derivatives, Fair Value [Line Items]    
Derivatives $ 268.3us-gaap_DerivativeAssets $ 296.3us-gaap_DerivativeAssets
Other invested assets 341.8hrg_OtherInvestedAssets 165.0hrg_OtherInvestedAssets
Call options [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 268.3us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CallOptionMember		 7,602.6us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CallOptionMember
Derivatives designated as hedging instruments [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 21.0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 14.2us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Total liability derivatives 3.4us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 1.9us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivatives designated as hedging instruments [Member] | Interest Rate Contract [Member] | Other assets [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 0.6us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivatives designated as hedging instruments [Member] | Interest Rate Contract [Member] | Accounts payable and other current liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Total liability derivatives 1.8us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= hrg_AccountsPayableAndOtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 1.8us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= hrg_AccountsPayableAndOtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivatives designated as hedging instruments [Member] | Interest Rate Contract [Member] | Other liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Total liability derivatives 0.4us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivatives designated as hedging instruments [Member] | Commodity swap and option agreements [Member] | Receivables, net [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 0.1us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_CommoditySwapAndOptionAgreementsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 1.3us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_CommoditySwapAndOptionAgreementsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivatives designated as hedging instruments [Member] | Commodity swap and option agreements [Member] | Other assets [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 0.1us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_CommoditySwapAndOptionAgreementsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_CommoditySwapAndOptionAgreementsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivatives designated as hedging instruments [Member] | Foreign exchange forward agreements [Member] | Other assets [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 0.1us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 0.3us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivatives designated as hedging instruments [Member] | Foreign Exchange Contract [Member] | Receivables, net [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 20.7us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 12.0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivatives designated as hedging instruments [Member] | Foreign Exchange Contract [Member] | Other liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Total liability derivatives 0.2us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivatives designated as hedging instruments [Member] | Commodity contracts [Member] | Accounts payable and other current liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Total liability derivatives 1.0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= hrg_AccountsPayableAndOtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		  
Derivatives designated as hedging instruments [Member] | Commodity contracts [Member] | Other liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Total liability derivatives   0.1us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Not Designated as Hedging Instrument [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 320.8us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 324.1us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Total liability derivatives 2,222.6us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 1,910.9us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Not Designated as Hedging Instrument [Member] | Foreign exchange forward agreements [Member] | Accounts payable and other current liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Total liability derivatives 0.9us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= hrg_AccountsPayableAndOtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 0.1us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= hrg_AccountsPayableAndOtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Receivables, net [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 0.5us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Receivables, net [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives   1.9us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Derivatives For Trading And Investment [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 19.3us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= hrg_DerivativesForTradingAndInvestmentMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		  
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Other liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Total liability derivatives 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 0.3us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Not Designated as Hedging Instrument [Member] | Call options [Member] | Derivatives For Trading And Investment [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 268.3us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= hrg_DerivativesForTradingAndInvestmentMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CallOptionMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 296.3us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= hrg_DerivativesForTradingAndInvestmentMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CallOptionMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Not Designated as Hedging Instrument [Member] | FIA embedded derivatives [Member] | Contractholder funds [Member]    
Derivatives, Fair Value [Line Items]    
Total liability derivatives 2,217.4us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_ContractHolderFundsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_FiaEmbeddedDerivativesMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 1,908.1us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_ContractHolderFundsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_FiaEmbeddedDerivativesMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Not Designated as Hedging Instrument [Member] | Futures contracts [Member] | Other liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Total liability derivatives 0.9us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_FutureMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 0.5us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_FutureMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Not Designated as Hedging Instrument [Member] | Embedded Derivative Financial Instruments [Member] | Derivatives For Trading And Investment [Member]    
Derivatives, Fair Value [Line Items]    
Total asset derivatives 12.2us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= hrg_DerivativesForTradingAndInvestmentMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EmbeddedDerivativeFinancialInstrumentsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 11.2us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= hrg_DerivativesForTradingAndInvestmentMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EmbeddedDerivativeFinancialInstrumentsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Contingent Purchase Price Reduction Receivable Fair Value Disclosure 47.0hrg_ContingentPurchasePriceReductionReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 41.5hrg_ContingentPurchasePriceReductionReceivableFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Funds Withheld Receivable 605.0hrg_FundsWithheldReceivable
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 [1] 154.4hrg_FundsWithheldReceivable
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 [1]
Assets, Fair Value Disclosure, Recurring 19,455.1us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 18,501.7us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Liabilities, Fair Value Disclosure, Recurring 2,807.1us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 2,062.2us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Fair Value, Measurements, Recurring [Member] | Interest Rate Contract [Member]    
Derivatives, Fair Value [Line Items]    
Derivatives 0us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 0.6us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Fair Value, Measurements, Recurring [Member] | Commodity Option [Member]    
Derivatives, Fair Value [Line Items]    
Derivatives 19.5us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityOptionMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 3.2us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityOptionMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Derivative Liability 1.0us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityOptionMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 0.4us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityOptionMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Fair Value, Measurements, Recurring [Member] | Foreign exchange forward agreements [Member]    
Derivatives, Fair Value [Line Items]    
Derivatives   12.8us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Derivative Liability 1.1us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 0.5us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Fair Value, Measurements, Recurring [Member] | Call options [Member]    
Derivatives, Fair Value [Line Items]    
Derivatives 268.3us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CallOptionMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 296.3us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CallOptionMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Fair Value, Measurements, Recurring [Member] | Available For Sale Embedded Derivatives [Member]    
Derivatives, Fair Value [Line Items]    
Equity securities - available-for-sale 593.9us-gaap_MarketableSecuritiesEquitySecurities
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_AvailableForSaleEmbeddedDerivativesMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 663.6us-gaap_MarketableSecuritiesEquitySecurities
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_AvailableForSaleEmbeddedDerivativesMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Fair Value, Measurements, Recurring [Member] | Fixed Index Annuity [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Liability 2,217.4us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_FixedIndexAnnuityMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 1,908.1us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_FixedIndexAnnuityMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Fair Value, Measurements, Recurring [Member] | Future Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Liability 0.9us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_FutureContractsMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		  
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Liability 2.2us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 1.8us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Funds Withheld Receivable 0hrg_FundsWithheldReceivable
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 [1] 0hrg_FundsWithheldReceivable
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 [1]
Assets, Fair Value Disclosure, Recurring 240.0us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 279.3us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Liabilities, Fair Value Disclosure, Recurring 0us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 0us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Available For Sale Embedded Derivatives [Member]    
Derivatives, Fair Value [Line Items]    
Equity securities - available-for-sale 27.2us-gaap_MarketableSecuritiesEquitySecurities
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_AvailableForSaleEmbeddedDerivativesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 59.2us-gaap_MarketableSecuritiesEquitySecurities
/ us-gaap_DerivativeInstrumentRiskAxis
= hrg_AvailableForSaleEmbeddedDerivativesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Asset-backed Securities [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
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Asset-backed Securities [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
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Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
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Derivatives, Fair Value [Line Items]    
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Commercial Mortgage Backed Securities [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 142.5us-gaap_AvailableForSaleSecurities
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Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 9,843.1us-gaap_AvailableForSaleSecurities
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Corporate Debt Securities [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 8,902.0us-gaap_AvailableForSaleSecurities
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Corporate Debt Securities [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 941.1us-gaap_AvailableForSaleSecurities
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Hybrids [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 1,357.3us-gaap_AvailableForSaleSecurities
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Hybrids [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 1,357.3us-gaap_AvailableForSaleSecurities
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Hybrids [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 0us-gaap_AvailableForSaleSecurities
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Municipals [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 1,435.6us-gaap_AvailableForSaleSecurities
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Municipals [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 1,395.8us-gaap_AvailableForSaleSecurities
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Municipals [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities   37.2us-gaap_AvailableForSaleSecurities
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Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 2,194.3us-gaap_AvailableForSaleSecurities
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Residential Mortgage Backed Securities [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 2,194.3us-gaap_AvailableForSaleSecurities
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Broker Quoted [Member] | Asset-backed Securities [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Derivatives, Fair Value [Line Items]    
Available-for-sale Securities 31.0us-gaap_AvailableForSaleSecurities
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[1] (a) included in other assets in the accompanying unaudited Consolidated Balance Sheets.