Schedule of Fair Value of Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Sep. 28, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 2.4
Fair Value Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2.2
Liabilities	(0.6)
Foreign Currency Contracts Asset Net Of Liabilities Fair Value Disclosure, Total	1.6
Marketable securities	2.4
Investments, Fair Value Disclosure	2.4
Fair Value Measurements, Recurring | Fair Value, Quoted Prices In Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	2.4
Investments, Fair Value Disclosure	2.4
Fair Value Measurements, Recurring | Fair Value, Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2.2
Liabilities	(0.6)
Foreign Currency Contracts Asset Net Of Liabilities Fair Value Disclosure, Total	$ 1.6