Derivative Financial Instruments - Pretax Impact of Derivative Instruments Designated as Cash Flow Hedges on the Accompanying Condensed Consolidated Statements of Operations, and Within AOCI (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Document Period End Date	Dec. 31, 2013
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	$ 0.9	$ (0.1)
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	0.2	0
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(0.9)	(0.5)
Consumer products cost of goods sold [Member] | Commodity contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	1.1	(0.2)
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	0.2	0
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(0.3)	(0.1)
Consumer products cost of goods sold [Member] | Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(0.4)	(0.4)
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	0
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(0.7)	(0.5)
Net consumer products sales [Member] | Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	0.2	0.5
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	0
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	$ 0.1	$ 0.1