Employee Benefit Obligations - Components of net periodic benefit cost (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
UNITED STATES
Components of net periodic benefit cost:
Service cost	$ 0.6	$ 0.8
Interest cost	3.7	3.7
Recognized net actuarial (gain) loss	(6.8)	(3.1)
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)
Amortization of transition obligation	0.0	0.0	0.0
Recognized net actuarial (gain) loss	0.7	0.2	0.1
Non-US [Member]
Components of net periodic benefit cost:
Service cost	2.6	2.6
Interest cost	5.7	6.2
Recognized net actuarial (gain) loss	(36.0)	(10.6)
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)
Amortization of transition obligation	0.1	0.7	(0.1)
Recognized net actuarial (gain) loss	$ 0.8	$ 1.3	$ 1.4
Minimum [Member] | UNITED STATES | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	3.40%	3.50%	3.60%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	7.00%	7.30%	7.30%
Maximum | UNITED STATES | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	4.30%	4.20%	4.70%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	7.30%	7.50%	7.80%
Spectrum Brands [Member] | Minimum [Member] | Non-US [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	1.80%	2.00%	2.30%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	1.80%	2.00%	4.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	2.25%	2.25%	2.30%
Spectrum Brands [Member] | Maximum | Non-US [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	13.80%	13.50%	12.50%
Components of net periodic benefit cost:
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	4.50%	5.26%	5.80%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	5.50%	5.50%	5.50%