Stock Compensation - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended									3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended			9 Months Ended	3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended								9 Months Ended									9 Months Ended		9 Months Ended						9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2013 Minimum [Member]	Jun. 30, 2013 Maximum [Member]	Jun. 30, 2014 Warrant [Member]	Jun. 30, 2014 HGI [Member]	Jun. 30, 2013 HGI [Member]	Jun. 30, 2014 HGI [Member] Stock option awards [Member]	Jun. 30, 2014 HGI [Member] Restricted stock awards [Member]	Jun. 30, 2014 HGI [Member] Restricted stock awards [Member]	Jun. 30, 2013 HGI [Member] Restricted stock awards [Member]	Sep. 30, 2013 HGI [Member] Restricted stock awards [Member]	Jun. 30, 2014 HGI [Member] Restricted stock units [Member]	Jun. 30, 2014 HGI [Member] Restricted stock units [Member]	Jun. 30, 2013 HGI [Member] Restricted stock units [Member]	Sep. 30, 2013 HGI [Member] Restricted stock units [Member]	Jun. 30, 2014 HGI [Member] Warrant [Member]	Jun. 30, 2014 HGI [Member] Employee Stock Option [Member]	Jun. 30, 2014 HGI [Member] Employee Stock Option [Member]	Jun. 30, 2013 HGI [Member] Employee Stock Option [Member]	Jun. 30, 2014 Spectrum Brands [Member]	Jun. 30, 2013 Spectrum Brands [Member]	Jun. 30, 2014 Spectrum Brands [Member]	Jun. 30, 2013 Spectrum Brands [Member]	Jun. 30, 2013 Spectrum Brands [Member] Minimum [Member]	Jun. 30, 2013 Spectrum Brands [Member] Time Based Restricted Stock Units Vesting Over One Year [Member]	Jun. 30, 2013 Spectrum Brands [Member] Performance Based and Time Based Restricted Stock Units Two Year Vesting [Member]	Jun. 30, 2014 Spectrum Brands [Member] Restricted stock units [Member]	Jun. 30, 2013 Spectrum Brands [Member] Restricted stock units [Member]	Sep. 30, 2013 Spectrum Brands [Member] Restricted stock units [Member]	Jun. 30, 2014 Spectrum Brands [Member] Immediate Vest Restricted Stock Units [Member]	Jun. 30, 2014 Spectrum Brands [Member] Time Based Restricted Stock Units [Member]	Jun. 30, 2013 Spectrum Brands [Member] Time Based Restricted Stock Units [Member]	Jun. 30, 2014 Spectrum Brands [Member] Performance-based and Time-based Shares [Member]	Jun. 30, 2013 Spectrum Brands [Member] Performance-based and Time-based Shares [Member] Minimum [Member]	Jun. 30, 2014 FGL [Member]	Jun. 30, 2014 FGL [Member] Maximum [Member]	Jun. 30, 2014 FGL [Member] Performance Restricted Stock Unit (PRSUs) [Member]	Sep. 30, 2013 FGL [Member] Performance Restricted Stock Unit (PRSUs) [Member]	Jun. 30, 2014 FGL [Member] Restricted stock awards [Member]	Sep. 30, 2013 FGL [Member] Restricted stock awards [Member]	Jun. 30, 2014 FGL [Member] Common Stock [Member]	Jun. 30, 2014 FGL [Member] Employee Stock Option [Member]	Jun. 30, 2014 FGLH [Member]	Jun. 30, 2013 FGLH [Member]	Jun. 30, 2014 FGLH [Member] Restricted stock units [Member]	Sep. 30, 2013 FGLH [Member] Restricted stock units [Member]	Jun. 30, 2014 FGLH [Member] Employee Stock Option [Member]	Jun. 30, 2014 Restricted stock awards [Member]	Jun. 30, 2014 Stock option awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Document Fiscal Year Focus			2014
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term																																							4 years 6 months									4 years 6 months
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount																																																				2,380,000	1,297,000
Stock-based compensation	$ 19.7	$ 22.7	$ 67.1	$ 44.9
Document Period End Date			Jun. 30, 2014
Options, granted																7,000	7,000			3,000,000	30,000	1,356,000	1,528,000																							249,000					0
Vesting period					1 year	7 months	48 months																																	3 years
Equity intruments other than options granted												10,000	3,313,000	3,256,000				9,000											90,000	554,000	442,000	644,000									541,000		171,000
Equity instruments other than options, grant date fair value																															30.6	30.2
Time-based and vest over period of restricted stock units																												1 year										2 years
Compensation cost not yet recognized									32.2																																						18.8
Unrecognized compensation cost expected to recognized, years									1 year 9 months 21 days																																						2 years 1 month 6 days
Weighted average remaining contractual term of outstanding stock option awards											8 years 5 months 10 days									4 years 8 months 9 days
Stock Issued During Period, Shares, Restricted Stock Award, Gross																								6,000	30,000	442,000	666,000							91,000	58,000	22,000	293,000
Granted									$ 46,600,000.00	$ 33,200,000.00			$ 12.00				$ 11.84														$ 69.21								$ 13,400,000.00		$ 17.37		$ 18.11		$ 1,000,000.00				$ 0.00
Deferred Compensation Arrangement with Individual, Shares Issued								3,000,000
Vested			$ 14,800,000.00										$ 10.15				$ 4.61														$ 39.65												$ 0.00						$ 49.53
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			3.6
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options			2.5
Volatility																																							25.00%									27.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number												5,581,000	5,581,000		3,456,000	7,000	7,000		22,000												611,000		1,118,000								541,000	0	166,000	0	58,000				27,000	46,000
Deferred Compensation Arrangement with Individual, Exercise Price								$ 13.25
Stock options vested and exercisable at June 30, 2014																				600,000		1,429,000																								0					132,000
Deferred Compensation Arrangement with Individual, Requisite Service Period								4 years
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued								$ 9.6