Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011
Summary Of Significant Accounting Policies [Line Items]
Percentage of sales accounted for using percentage of completion	33.00%
Percent of sales as units are delivered or services are performed	67.00%
Goodwill impairment charge	$ 38,200,000	$ 0	$ 0
Impairment charges of long-lived assets	$ 0
Buildings [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property plant and equipment, years	40
Building Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property plant and equipment, years	15
Machinery And Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property plant and equipment, years	10
Tooling And Test Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property plant and equipment, years	8
Furniture And Fixtures [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property plant and equipment, years	12
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Product Warranty Period	60
Maximum [Member] | Computer Hardware [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property plant and equipment, years	4
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Product Warranty Period	12
Minimum [Member] | Computer Hardware [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of property plant and equipment, years	3