Acquisition (Business Combination) (Details) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended	3 Months Ended		6 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended		0 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013	Sep. 30, 2013	Oct. 02, 2012 Servigistics, Inc employees	Jun. 29, 2013 Servigistics, Inc	Mar. 30, 2013 Servigistics, Inc	Mar. 30, 2013 Servigistics, Inc	Dec. 27, 2013 ThingWorx, Inc. [Member]	Mar. 29, 2014 ThingWorx, Inc. [Member]	Dec. 30, 2013 ThingWorx [Member] employees	Mar. 29, 2014 Trademarks [Member]	Mar. 29, 2014 Trademarks [Member] ThingWorx, Inc. [Member]	Mar. 29, 2014 Computer Software, Intangible Asset [Member]	Mar. 29, 2014 Computer Software, Intangible Asset [Member] ThingWorx, Inc. [Member]	Mar. 29, 2014 Customer Relationships [Member] ThingWorx, Inc. [Member]	Dec. 27, 2013 Line of Credit [Member] ThingWorx [Member]
Business Acquisition [Line Items]
Deferred Tax Liabilities, Intangible Assets											$ (8,934,000)
Acquisition-related cost	3,900,000	2,100,000	5,200,000	6,700,000				1,000,000	5,600,000
Total purchase price allocation, net of cash acquired			111,519,000	222,423,000		220,800,000					111,519,000
Business Combination, Contingent Consideration, Liability	13,048,000		13,048,000		0
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low	0		0
Borrowings under credit facility			474,375,000	0														110,000,000
Cash received as final purchase price adjustment							1,600,000
Cash acquired from acquisition						(1,400,000)				(133,000)
Business Combination, Consideration Transferred											124,567,000
Annualized revenue reported by acquired entity						80,000,000
Number of employees of acquiree						400						40
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	18,000,000		18,000,000
Tax benefit recorded to decrease valuation allowance in conjunction with business combination								32,600,000			(8,900,000)
Goodwill, Acquired During Period			102,190,000								102,190,000
Finite-lived Intangible Assets Acquired											32,100,000			2,300,000		20,500,000	8,800,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life													8 years	12 years	8 years	11 years	9 years
Research and Development in Process	500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other											(789,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net											$ 124,700,000