Other Required Disclosures - Summarization of Remaining Accrual Balance Associated with Initiatives and Activity (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Jun. 30, 2013		Jul. 01, 2012
Restructuring Cost and Reserve [Line Items]
Accrual Balance at September 30, 2012	$ 6.6
Provisions	14.0
Cash Expenditures	(4.6)
Accrual Balance at June 30, 2013	16.7
Expensed as Incurred	13.7	[1]
Non Cash Restructuring And Related Charges	0.7		(3.0)
Other initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Accrual Balance at September 30, 2012	2.2
Provisions	1.6
Cash Expenditures	(0.3)
Accrual Balance at June 30, 2013	4.2
Expensed as Incurred	3.6	[1]
Non Cash Restructuring And Related Charges	0.7
Global Expense Rationalization Initiatives [Member] [Member]
Restructuring Cost and Reserve [Line Items]
Accrual Balance at September 30, 2012	0
Provisions	6.8
Cash Expenditures	(0.1)
Accrual Balance at June 30, 2013	6.6
Expensed as Incurred	1.1	[1]
Non Cash Restructuring And Related Charges	0
Global Expense Rationalization Initiatives [Member] [Member] | Termination benefits [Member]
Restructuring Cost and Reserve [Line Items]
Accrual Balance at September 30, 2012	0
Provisions	6.8
Cash Expenditures	(0.1)
Accrual Balance at June 30, 2013	6.6
Expensed as Incurred	0.8	[1]
Non Cash Restructuring And Related Charges	0
Global Expense Rationalization Initiatives [Member] [Member] | Other costs [Member]
Restructuring Cost and Reserve [Line Items]
Accrual Balance at September 30, 2012	0
Provisions	0
Cash Expenditures	0
Accrual Balance at June 30, 2013	0
Expensed as Incurred	0.3	[1]
Non Cash Restructuring And Related Charges	0
Global Cost Reduction Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Accrual Balance at September 30, 2012	4.4
Provisions	5.6
Cash Expenditures	(4.2)
Accrual Balance at June 30, 2013	5.9
Expensed as Incurred	9.0	[1]
Non Cash Restructuring And Related Charges	0
Global Cost Reduction Initiatives [Member] | Termination benefits [Member]
Restructuring Cost and Reserve [Line Items]
Accrual Balance at September 30, 2012	3.3
Provisions	5.4
Cash Expenditures	(3.1)
Accrual Balance at June 30, 2013	5.6
Expensed as Incurred	1.2	[1]
Non Cash Restructuring And Related Charges	0
Global Cost Reduction Initiatives [Member] | Other costs [Member]
Restructuring Cost and Reserve [Line Items]
Accrual Balance at September 30, 2012	1.1
Provisions	0.2
Cash Expenditures	(1.1)
Accrual Balance at June 30, 2013	0.3
Expensed as Incurred	7.8	[1]
Non Cash Restructuring And Related Charges	$ 0

[1] Consists of amounts not impacting the accrual for restructuring and related charges.