Business Segments and Geographic Information - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 28, 2014 Customer	Jun. 29, 2013 Customer	Jun. 28, 2014 Segment Customer	Jun. 29, 2013 Customer	Sep. 28, 2013 Customer
Segment Reporting Disclosure [Line Items]
Number of reportable segments			4
Revenues	$ 632.6	$ 626.1	$ 1,870.1	$ 1,870.2
Customers with balances greater than 10% of accounts receivable	0		0		0
Customer represented greater than 10% of consolidated revenues	0	0	0	0
Intersegment [Member]
Segment Reporting Disclosure [Line Items]
Revenues	$ 0	$ 0	$ 0	$ 0