v3.5.0.2
Document and Entity Information - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Aug. 04, 2016
Sep. 30, 2015
Document Information [Line Items]            
Financing Receivable, Allowance for Credit Losses, Period Increase (Decrease) $ 16.9 $ (9.4) $ 17.0 $ (26.6)    
Provision for Loan, Lease, and Other Losses (11.7) 9.4 2.7 77.7    
Asset-backed loans 48.2   $ 48.2     $ 226.7
Document Type     10-Q      
Amendment Flag     false      
Document Period End Date     Jun. 30, 2016      
Asset Backed Loans And Other Invested Assets Gross 82.0   $ 82.0     274.6
Less: Allowance for credit losses $ 33.8   $ 33.8     $ 47.9
Industry Holdings, Number of Top Investments 10   10      
Equity Securities Holdings Exposure Amount of Single Issuer Greater than Stated Percentage of Total Investments 10.00%   10.00%      
Document Fiscal Year Focus     2016      
Document Fiscal Period Focus     Q3      
Trading Symbol     HRG      
Entity Registrant Name     HRG GROUP, INC.      
Entity Central Index Key     0000109177      
Current Fiscal Year End Date     --09-30      
Entity Filer Category     Large Accelerated Filer      
Entity Common Stock, Shares Outstanding         200,783,392  
Spectrum Brands [Member]            
Document Information [Line Items]            
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net $ 9.6 (7.8) $ 8.8 9.3    
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net $ (1.1) $ 8.1 $ (0.2) $ 19.9