Acquisition (Purchase Price Allocation) (Details) (USD $)	6 Months Ended			0 Months Ended	3 Months Ended	0 Months Ended		6 Months Ended	0 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Sep. 30, 2012	Oct. 02, 2012 Servigistics, Inc	Dec. 29, 2012 Servigistics, Inc	Oct. 02, 2012 Purchased Software Servigistics, Inc	Oct. 02, 2012 Customer Relationships Servigistics, Inc	Mar. 30, 2013 Trademarks	Oct. 02, 2012 Trademarks Servigistics, Inc
Business Acquisition [Line Items]
Goodwill	$ 748,251,000		$ 610,347,000	$ 141,438,000
Identifiable intangible assets				118,300,000	118,300,000	49,900,000	66,000,000		2,400,000
Cash				1,355,000
Accounts receivable				20,536,000
Property and equipment				3,588,000
Deferred maintenance revenue				(11,714,000)
Deferred tax assets and liabilities, net				(35,566,000)	35,600,000
Accrued employee related liabilities				(9,010,000)
Net assumed liabilities				(5,149,000)
Total purchase price allocation				223,778,000
Less: Servigistics cash acquired				(1,355,000)
Total purchase price allocation, net of cash acquired	222,423,000	1,170,000		222,423,000
Acquired finite-lived intangible asset, weighted average useful life						9 years	10 years	7 years	7 years
Tax benefit recorded to decrease valuation allowance in conjunction with business combination					$ (32,600,000)