Acquisition (Business Combination) (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013	Mar. 31, 2012	Oct. 02, 2012 Servigistics, Inc employees	Mar. 30, 2013 Servigistics, Inc	Mar. 30, 2013 Servigistics, Inc	Sep. 30, 2012 Revolving Loan Servigistics, Inc
Business Acquisition [Line Items]
Total purchase price allocation, net of cash acquired			$ 222,423,000	$ 1,170,000	$ 222,423,000
Cash acquired from acquisition					1,400,000
Annualized revenue reported by acquired entity					80,000,000
Number of employees of acquiree					400
Revolving credit facility, additional borrowings to finance acquisition								230,000,000
Revenue of acquirees since acquisition dates, actual						20,200,000	45,500,000
Acquisition-related cost	$ 2,100,000	$ 400,000	$ 6,700,000	$ 2,500,000