Taxes on Earnings - Schedule of Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Oct. 02, 2015
Income Tax Disclosure [Abstract]
Deferred revenues	$ 30.2	$ 28.2
Deferred compensation	38.9	33.5
Product warranty	11.9	10.5
Inventory adjustments	21.5	20.9
Share-based compensation	22.3	22.8
Environmental reserve	4.2	4.3
Accruals and reserves	15.7	14.3
Net operating loss carryforwards	106.6	92.6
Other	39.1	31.7
Total deferred tax assets, gross	290.4	258.8
Valuation allowance	(79.6)	(69.7)
Total deferred tax assets	210.8	189.1
Tax-deductible goodwill	(24.6)	(23.3)
Property, plant and equipment	(25.1)	(15.5)
Unremitted earnings of foreign subsidiaries	(20.2)	(27.9)
Other	(28.6)	(34.8)
Total deferred tax liabilities	(98.5)	(101.5)
Net deferred tax assets	112.3	87.6
Deferred tax assets	138.9	119.4
Deferred tax liabilities (included in other long-term liabilities)	$ (26.6)	$ (31.8)