Document and Entity Information $ in Millions	3 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Feb. 01, 2016 shares	Sep. 30, 2015 USD ($)
Document Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Period Increase (Decrease)	$ 4.2
Provision for Loan, Lease, and Other Losses	(7.9)	$ 0.2
Asset-backed loans	$ 153.1			$ 226.7
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Asset Backed Loans And Other Invested Assets Gross	$ 196.8			274.6
Less: Allowance for credit losses	$ 43.7			$ 47.9
Industry Holdings, Number of Top Investments				10
Equity Securities Holdings Exposure Amount of Single Issuer Greater than Stated Percentage of Total Investments	10.00%
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
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 | shares			200,598,064
Spectrum Brands [Member]
Document Information [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	$ 4.6	7.7
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 0.2	$ 4.8