Employee Benefit Obligations - Components of Consolidated Net Periodic Benefit and Deferred Compensation Benefit Costs and Contributions Made (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 192.7	$ 189.5
Components of net periodic benefit cost:
Accrued Benefit Cost / Funded Status		(116.6)	$ (88.1)
Non-US [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee benefit obligations	210.6	184.4	196.2
Defined Benefit Plan, Fair Value of Plan Assets	115.0	116.9	126.5
Components of net periodic benefit cost:
Service cost	2.6	2.6
Interest cost	5.7	6.2
Recognized net actuarial loss	(36.0)	(10.6)
Contributions made during period	6.6	7.8
Obligations assumed from acquisitions	0.0	0.6
Defined Benefit Plan, Other Changes	0.0	(1.8)
Curtailments	0.0	0.9
Benefits paid	6.1	11.8
Foreign currency exchange rate changes	(12.0)	(17.3)
Actual return on plan assets	8.9	3.6
Foreign currency exchange rate changes	(11.3)	(9.2)
Accrued Benefit Cost / Funded Status	(95.6)	(67.5)
Non-US [Member] | Pension Plan [Member]
Components of net periodic benefit cost:
Service cost	2.6	2.6	3.0
Interest cost	5.7	6.2	7.4
Expected return on assets	(4.2)	(5.2)	(5.8)
Recognized net actuarial loss	0.8	1.3	1.4
Net periodic cost (benefit)	5.0	5.6	5.9
Amortization of transition obligation	0.1	0.7	(0.1)
UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Employee benefit obligations	98.7	93.2	91.0
Defined Benefit Plan, Fair Value of Plan Assets	77.7	72.6	78.0
Components of net periodic benefit cost:
Service cost	0.6	0.8
Interest cost	3.7	3.7
Recognized net actuarial loss	(6.8)	(3.1)
Contributions made during period	4.2	1.0
Obligations assumed from acquisitions	0.0	0.0
Defined Benefit Plan, Other Changes	0.0	0.0
Curtailments	0.0	0.0
Benefits paid	5.6	5.4
Foreign currency exchange rate changes	0.0	0.0
Actual return on plan assets	6.5	(1.0)
Foreign currency exchange rate changes	0.0	0.0
Accrued Benefit Cost / Funded Status	(21.0)	(20.6)
UNITED STATES | Pension Plan [Member]
Components of net periodic benefit cost:
Service cost	0.6	0.8	0.5
Interest cost	3.7	3.7	3.8
Expected return on assets	(5.2)	(5.6)	(5.2)
Recognized net actuarial loss	0.7	0.2	0.1
Net periodic cost (benefit)	(0.2)	(0.9)	(0.8)
Amortization of transition obligation	$ 0.0	$ 0.0	$ 0.0
Minimum [Member] | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		3.40%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Return on Plan Assets		7.00%
Minimum [Member] | UNITED STATES | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	2.80%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	7.00%	7.30%	7.30%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Return on Plan Assets	7.00%
Minimum [Member] | Spectrum Brands [Member] | Non-US [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	1.00%	1.80%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	1.80%	2.00%	4.00%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Return on Plan Assets	1.00%	3.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	2.25%	2.25%	2.30%
Maximum | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		4.30%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Return on Plan Assets		7.30%
Maximum | UNITED STATES | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	7.30%	7.50%	7.80%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Return on Plan Assets	7.00%
Maximum | Spectrum Brands [Member] | Non-US [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	13.50%	13.80%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	4.50%	5.26%	5.80%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Return on Plan Assets	3.70%	5.30%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	5.50%	5.50%	5.50%