Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Oct. 02, 2015	Oct. 03, 2014
Current:
Inventory	$ 4.9	$ 5.3
Bad debts	0.1	0.2
Accrued compensation and benefits	5.2	5.0
Product returns, allowances and warranty	4.3	4.9
Restructuring	0.1	0.2
Other - net	0.6	0.3
Current deferred tax assets	15.2	15.9
Less valuation allowance	(6.4)	(6.4)
Net current deferred tax assets	8.8	9.5
Long-term:
Intangible assets	11.6	4.7
Share-based and other deferred compensation	44.6	39.4
Net operating loss carry forwards	7.4	12.7
Federal tax credits	11.5	13.0
State tax credits	53.4	43.1
Other - net	2.4	2.7
Long-term deferred tax assets	130.9	115.6
Less valuation allowance	(58.8)	(54.4)
Net long-term deferred tax assets	72.1	61.2
Deferred tax assets	146.1	131.5
Less valuation allowance	(65.2)	(60.8)
Net deferred tax assets	80.9	70.7
Deferred Tax Liabilities:
Prepaid insurance	(0.8)	(0.8)
Current deferred tax liabilities	(0.8)	(0.8)
Property, plant and equipment	(10.1)	(11.6)
Intangible assets	(8.2)	(1.2)
Long-term deferred tax liabilities	(18.3)	(12.8)
Net deferred tax liabilities	(19.1)	(13.6)
Total deferred tax assets	$ 61.8	$ 57.1