Taxes on Earnings - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 26, 2014	Sep. 27, 2013
Income Tax [Line Items]
Cumulative undistributed earnings of non-U.S subsidiaries	$ 1,947.8
Increase (decrease) in valuation allowance	9.9	$ 2.2	$ 6.8
Unrecognized tax benefits	40.7	39.5	$ 49.6	$ 37.0
Amount that would affect the effective tax rate	35.1
Accrued interest and penalties related to unrecognized tax benefits	8.0	7.1
Net expense (benefit) related to interest and penalties was included in taxes on earnings	0.8	$ (0.5)
Foreign Tax Authority
Income Tax [Line Items]
Additional deferred taxes liabilities if earnings were not considered to be reinvested indefinitely	504.3
Net operating loss carry forwards	333.1
Amount unavailable to the company under local loss utilization	31.2
Internal Revenue Service (IRS) | Minimum
Income Tax [Line Items]
Net operating loss carry forwards	10.7
Federal
Income Tax [Line Items]
Net operating loss carryforwards subject to an annual limitation	1.3
State and Local Jurisdiction
Income Tax [Line Items]
Net operating loss carry forwards	$ 9.1