Long Term Debt (Details) (USD $)	3 Months Ended				3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Aug. 31, 2012 banks	Dec. 29, 2012 Secured Debt [Member]	Dec. 29, 2012 Line of Credit [Member]	Dec. 29, 2012 Line of Credit [Member] Maximum [Member]	Dec. 29, 2012 Line of Credit [Member] Minimum [Member]	Sep. 30, 2012 Line of Credit [Member] Servigistics, Inc [Member]
Debt Instrument [Line Items]
Revolving credit facility syndicate, number of participating banks			10
Credit facility amount				$ 150,000,000	$ 300,000,000
Revolving credit facility additional borrowing limit	150,000,000
Voting interest in foreign subsidiaries pledged against credit facility	65.00%
Revolving credit facility, additional borrowings								230,000,000
Repayments under the credit facility	1,900,000
Borrowings outstanding	368,100,000			148,000,000	220,000,000
Repayment of line of credit	1,875,000	40,000,000
Credit facility interest rate						1.625%	1.25%
Basis spread over base rate						0.625%	0.25%
Basis spread on federal funds effective rate					0.005%
Basis spread on adjusted LIBOR					1.00%
Credit facility commitment fees percentage						0.30%	0.20%
Investment limit in foreign subsidiaries	50,000,000
Cash investment limit for acquisition of business	75,000,000
Maximum leverage ratio allowed under debt covenant	2.5
Minimum fixed charge coverage ratio allowed under debt covenant	3.50
Leverage ratio, actual	1.5
Fixed charge coverage ratio, actual	21.9
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months				5,600,000
Long-term Debt, Maturities, Repayments of Principal in Year Two				15,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Three				15,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Four				22,500,000
Long-term Debt, Maturities, Repayments of Principal in Year Five				$ 90,000,000