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Consolidating Financial Information - Schedule of Balance Sheet Information (Detail) (USD $) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2013
Condensed Balance Sheet [Line Items] |  |  |  |
Document Period End Date | Dec. 31, 2014 |  |  |
Assets: |  |  |  |
Investments | $ 19,740,300,000 us-gaap_Investments | $ 19,252,500,000 us-gaap_Investments |  |
Cash and cash equivalents | 1,311,400,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,319,200,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,293,800,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,899,700,000 us-gaap_CashAndCashEquivalentsAtCarryingValue
Receivables, net | 660,100,000 us-gaap_ReceivablesNetCurrent | 585,100,000 us-gaap_ReceivablesNetCurrent |  |
Inventories, net | 710,200,000 us-gaap_InventoryNet | 635,200,000 us-gaap_InventoryNet |  |
Accrued investment income | 167,900,000 us-gaap_AccruedInvestmentIncomeReceivable | 184,900,000 us-gaap_AccruedInvestmentIncomeReceivable |  |
Reinsurance recoverable | 2,416,700,000 us-gaap_ReinsuranceRecoverables | 2,397,600,000 us-gaap_ReinsuranceRecoverables |  |
Deferred tax assets | 178,800,000 us-gaap_DeferredTaxAssetsNet | 186,700,000 us-gaap_DeferredTaxAssetsNet |  |
Properties, including oil and natural gas properties, net | 1,054,800,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet | 908,600,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet |  |
Goodwill | 1,491,900,000 us-gaap_Goodwill | 1,524,800,000 us-gaap_Goodwill |  |
Intangibles, including deferred acquisition costs and value of business acquired, net | 2,712,300,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 2,683,700,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |  |
Other assets | 762,300,000 us-gaap_OtherAssets | 421,900,000 us-gaap_OtherAssets |  |
Total assets | 31,206,700,000 us-gaap_Assets | 30,100,200,000 us-gaap_Assets |  |
Liabilities and Equity: |  |  |  |
Debt | 5,560,700,000 us-gaap_LongTermDebtNoncurrent | 5,061,100,000 us-gaap_LongTermDebtNoncurrent |  |
Employee benefit obligations | 82,500,000 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent | 86,200,000 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent |  |
Deferred tax liabilities | 518,000,000 us-gaap_DeferredTaxLiabilitiesNoncurrent | 533,300,000 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |
Total liabilities | 29,124,700,000 us-gaap_Liabilities | 27,843,200,000 us-gaap_Liabilities |  |
Total stockholders' equity | 1,276,200,000 us-gaap_StockholdersEquity | 1,441,600,000 us-gaap_StockholdersEquity |  |
Noncontrolling interests | 805,800,000 us-gaap_MinorityInterest | 815,400,000 us-gaap_MinorityInterest |  |
Total permanent equity | 2,082,000,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 2,257,000,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  |
Total liabilities and equity | 31,206,700,000 us-gaap_LiabilitiesAndStockholdersEquity | 30,100,200,000 us-gaap_LiabilitiesAndStockholdersEquity |  |
Consolidated Entities [Member] |  |  |  |
Assets: |  |  |  |
Investments | 19,740,300,000 us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 19,252,500,000 us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Cash and cash equivalents | 1,311,400,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 1,319,200,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Receivables, net | 660,100,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 585,100,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Inventories, net | 710,200,000 us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 635,200,000 us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Accrued investment income | 167,900,000 us-gaap_AccruedInvestmentIncomeReceivable / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 184,900,000 us-gaap_AccruedInvestmentIncomeReceivable / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Reinsurance recoverable | 2,416,700,000 us-gaap_ReinsuranceRecoverables / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 2,397,600,000 us-gaap_ReinsuranceRecoverables / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Deferred tax assets | 178,800,000 us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 186,700,000 us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Properties, including oil and natural gas properties, net | 1,054,800,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 908,600,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Goodwill | 1,491,900,000 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 1,524,800,000 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Intangibles, including deferred acquisition costs and value of business acquired, net | 2,712,300,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 2,683,700,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Other assets | 762,300,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 421,900,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Total assets | 31,206,700,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 30,100,200,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Liabilities and Equity: |  |  |  |
Insurance reserves | 21,246,600,000 hrg_TotalInsuranceReserves / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 20,215,100,000 hrg_TotalInsuranceReserves / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Debt | 5,666,000,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 5,157,800,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Accounts payable and other current liabilities | 899,600,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 1,033,000,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Employee benefit obligations | 82,500,000 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 86,200,000 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Deferred tax liabilities | 518,000,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 533,300,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Other liabilities | 712,000,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 817,800,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Total liabilities | 29,124,700,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 27,843,200,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Total stockholders' equity | 1,276,200,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 1,441,600,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Noncontrolling interests | 805,800,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 815,400,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Total permanent equity | 2,082,000,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 2,257,000,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Total liabilities and equity | 31,206,700,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember | 30,100,200,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidatedEntitiesMember |  |
Consolidation, Eliminations [Member] |  |  |  |
Assets: |  |  |  |
Investments | (247,600,000)us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (246,500,000)us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Investments in subsidiaries and affiliates | (2,373,600,000)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (2,306,100,000)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Affiliated loans and receivables | (157,200,000)us-gaap_LoansAndLeasesReceivableRelatedParties / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (185,700,000)us-gaap_LoansAndLeasesReceivableRelatedParties / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Accrued investment income | (700,000)us-gaap_AccruedInvestmentIncomeReceivable / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (600,000)us-gaap_AccruedInvestmentIncomeReceivable / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Deferred tax assets | (100,000)us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (100,000)us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Other assets | 100,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |  |
Total assets | (2,779,100,000)us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (2,739,000,000)us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Liabilities and Equity: |  |  |  |
Insurance reserves | 0 hrg_TotalInsuranceReserves / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |  |
Accounts payable and other current liabilities | 500,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | 500,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Employee benefit obligations | 0 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |  |
Deferred tax liabilities | 2,400,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | 100,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Other liabilities | 0 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |  |
Affiliated debt and payables | (403,500,000)us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (431,400,000)us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Total liabilities | (400,600,000)us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (430,800,000)us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Total stockholders' equity | (2,378,500,000)us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (2,308,200,000)us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Noncontrolling interests | 0 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |  |
Total permanent equity | (2,378,500,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (2,308,200,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Total liabilities and equity | (2,779,100,000)us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember | (2,739,000,000)us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ConsolidationEliminationsMember |  |
Corporate and Other [Member] |  |  |  |
Assets: |  |  |  |
Investments | 81,900,000 us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 93,700,000 us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Investments in subsidiaries and affiliates | 2,309,100,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 2,237,900,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Affiliated loans and receivables | 100,000 us-gaap_LoansAndLeasesReceivableRelatedParties / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |  |
Cash and cash equivalents | 211,700,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 423,100,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Receivables, net | 45,300,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 43,100,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Inventories, net | 8,300,000 us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 10,700,000 us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Deferred tax assets | 1,100,000 us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 1,100,000 us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Properties, including oil and natural gas properties, net | 2,000,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 2,500,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Goodwill | 16,200,000 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 44,500,000 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Intangibles, including deferred acquisition costs and value of business acquired, net | 9,900,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 41,800,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Other assets | 35,100,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 34,700,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Total assets | 2,720,700,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 2,933,100,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Liabilities and Equity: |  |  |  |
Debt | 1,325,700,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 1,325,000,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Accounts payable and other current liabilities | 92,500,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 104,600,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Employee benefit obligations | 4,200,000 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 4,300,000 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Deferred tax liabilities | 5,400,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 17,200,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Other liabilities | 1,300,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 1,100,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Affiliated debt and payables | 30,900,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 34,800,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Total liabilities | 1,460,000,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 1,487,000,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Total stockholders' equity | 1,276,200,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 1,441,600,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Noncontrolling interests | (15,500,000)us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 4,500,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Total permanent equity | 1,260,700,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 1,446,100,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Total liabilities and equity | 2,720,700,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 2,933,100,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |
Asset Management segment [Member] |  |  |  |
Assets: |  |  |  |
Investments | 546,300,000 us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 584,600,000 us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Affiliated loans and receivables | 18,300,000 us-gaap_LoansAndLeasesReceivableRelatedParties / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 28,500,000 us-gaap_LoansAndLeasesReceivableRelatedParties / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Cash and cash equivalents | 78,900,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 53,500,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Receivables, net | 800,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 900,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Accrued investment income | 4,800,000 us-gaap_AccruedInvestmentIncomeReceivable / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 3,700,000 us-gaap_AccruedInvestmentIncomeReceivable / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Deferred tax assets | 100,000 us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |  |
Properties, including oil and natural gas properties, net | 1,300,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 1,400,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Goodwill | 10,700,000 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 10,700,000 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Other assets | 8,900,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 9,200,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Total assets | 670,100,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 692,500,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Liabilities and Equity: |  |  |  |
Insurance reserves | 0 hrg_TotalInsuranceReserves / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |  |
Debt | 297,700,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 298,700,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Accounts payable and other current liabilities | 11,300,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 8,500,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Employee benefit obligations | 0 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |  |
Deferred tax liabilities | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |  |
Other liabilities | 12,800,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 19,300,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Affiliated debt and payables | 271,400,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 286,500,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Total liabilities | 593,200,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 613,000,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Total stockholders' equity | 65,800,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 68,200,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Noncontrolling interests | 11,100,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 11,300,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Total permanent equity | 76,900,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 79,500,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Total liabilities and equity | 670,100,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember | 692,500,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_AssetManagementsegmentMember |  |
Energy Segment [Member] |  |  |  |
Assets: |  |  |  |
Cash and cash equivalents | 12,900,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 14,200,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Receivables, net | 36,400,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 23,700,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Properties, including oil and natural gas properties, net | 620,000,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 464,400,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Other assets | 1,700,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 2,500,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Total assets | 671,000,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 504,800,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Liabilities and Equity: |  |  |  |
Debt | 327,000,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 243,200,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Accounts payable and other current liabilities | 31,100,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 31,300,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Employee benefit obligations | 0 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |  |
Other liabilities | 37,400,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 27,300,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Affiliated debt and payables | 100,000,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 102,300,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Total liabilities | 495,500,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 404,100,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Total stockholders' equity | 175,100,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 100,700,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Noncontrolling interests | 400,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |  |
Total permanent equity | 175,500,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 100,700,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Total liabilities and equity | 671,000,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember | 504,800,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_EnergySegmentMember |  |
Insurance Segment [Member] |  |  |  |
Assets: |  |  |  |
Investments | 19,359,700,000 us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 18,820,700,000 us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Investments in subsidiaries and affiliates | 64,500,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 68,200,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Affiliated loans and receivables | 138,800,000 us-gaap_LoansAndLeasesReceivableRelatedParties / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 157,200,000 us-gaap_LoansAndLeasesReceivableRelatedParties / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Cash and cash equivalents | 599,500,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 633,800,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Receivables, net | 800,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 2,100,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Accrued investment income | 163,800,000 us-gaap_AccruedInvestmentIncomeReceivable / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 181,800,000 us-gaap_AccruedInvestmentIncomeReceivable / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Reinsurance recoverable | 2,416,700,000 us-gaap_ReinsuranceRecoverables / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 2,397,600,000 us-gaap_ReinsuranceRecoverables / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Deferred tax assets | 136,000,000 us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 139,000,000 us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Properties, including oil and natural gas properties, net | 11,700,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 11,400,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Intangibles, including deferred acquisition costs and value of business acquired, net | 635,700,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 550,400,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Other assets | 564,700,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 233,600,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Total assets | 24,091,900,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 23,195,800,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Liabilities and Equity: |  |  |  |
Insurance reserves | 21,246,600,000 hrg_TotalInsuranceReserves / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 20,215,100,000 hrg_TotalInsuranceReserves / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Debt | 300,000,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 300,000,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Accounts payable and other current liabilities | 50,100,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 71,900,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Employee benefit obligations | 0 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |  |
Deferred tax liabilities | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |  |
Other liabilities | 640,300,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 748,900,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Affiliated debt and payables | 1,200,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 7,800,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Total liabilities | 22,238,200,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 21,343,700,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Total stockholders' equity | 1,522,300,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 1,526,900,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Noncontrolling interests | 331,400,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 325,200,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Total permanent equity | 1,853,700,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 1,852,100,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Total liabilities and equity | 24,091,900,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember | 23,195,800,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_InsuranceSegmentMember |  |
Consumer Products Segment [Member] |  |  |  |
Assets: |  |  |  |
Cash and cash equivalents | 408,400,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 194,600,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Receivables, net | 576,800,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 515,300,000 us-gaap_ReceivablesNetCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Inventories, net | 701,900,000 us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 624,500,000 us-gaap_InventoryNet / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Deferred tax assets | 41,700,000 us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 46,700,000 us-gaap_DeferredTaxAssetsNet / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Properties, including oil and natural gas properties, net | 419,800,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 428,900,000 hrg_PropertyPlantAndEquipmentIncludingOilAndGasPropertyNet / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Goodwill | 1,465,000,000 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 1,469,600,000 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Intangibles, including deferred acquisition costs and value of business acquired, net | 2,066,700,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 2,091,500,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Other assets | 151,800,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 141,900,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Total assets | 5,832,100,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 5,513,000,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Liabilities and Equity: |  |  |  |
Debt | 3,415,600,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 2,990,900,000 us-gaap_LongTermDebtNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Accounts payable and other current liabilities | 714,100,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 816,200,000 us-gaap_AccountsPayableCurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Employee benefit obligations | 78,300,000 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 81,900,000 us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Deferred tax liabilities | 510,200,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 516,000,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Other liabilities | 20,200,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 21,200,000 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Total liabilities | 4,738,400,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 4,426,200,000 us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Total stockholders' equity | 615,300,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 612,400,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Noncontrolling interests | 478,400,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 474,400,000 us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Total permanent equity | 1,093,700,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | 1,086,800,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |
Total liabilities and equity | $ 5,832,100,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember | $ 5,513,000,000 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = hrg_ConsumerProductsSegmentMember |  |

X
- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. + References No definition available. + Details
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