Accrued Expenses and Other Long-Term Liabilities - Schedule of Accrued Expenses (Detail) - USD ($) $ in Millions	Sep. 26, 2015	Sep. 27, 2014
Accrued Expenses
Compensation and employee benefits	$ 173.2	$ 157.6
Interest	14.6	18.0
Income and other taxes	13.3	9.8
Other	71.0	76.7
Total	$ 272.1	$ 262.1