Income Taxes (Narrative) (Details) (USD $)	3 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Sep. 30, 2012	Sep. 30, 2013
Income Tax Disclosure [Line Items]
Effective income tax rate	25.00%	(197.00%)
Income before income taxes	$ 53,118,000	$ 12,054,000
Statutory federal income tax rate	35.00%
Non-cash charge to establish a valuation allowance against U.S. deferred tax assets			124,500,000
Unrecognized tax benefits	14,300,000			13,700,000
Income tax provision upon recognition of unrecognized tax benefit	13,400,000
Unrecognized tax benefits that would impact valuation allowance	7,200,000
Potentail reduction in unrecognized tax benefits and accrued interest over next 12 months	2,000,000
Adjustments to additional paid in capital, income tax benefit from share-based compensation	6,800,000
Servigistics, Inc
Income Tax Disclosure [Line Items]
Identifiable intangible assets		118,300,000
Deferred tax assets and liabilities, net		(35,600,000)
Tax benefit recorded to decrease valuation allowance in conjunction with business combination		$ 32,600,000