Basis Of Presentation and Summary of Significant Accounting Policies Other Assets (Details) (USD $)	12 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Oct. 01, 2010
Other Assets [Line Items]
Amortization	$ 86,900,000	$ 76,700,000	$ 67,800,000
AIM Services Co., Ltd
Other Assets [Line Items]
Ownership interest in AIM Services Co., Ltd.	50.00%
Equity method investments	233,400,000	269,700,000
Current assets	433,584,000	402,381,000
Noncurrent assets	222,813,000	215,475,000
Current liabilities	374,062,000	321,025,000
Noncurrent liabilities	74,680,000	67,008,000
Sales	1,916,620,000	1,772,143,000	1,589,709,000
Gross profit	222,033,000	222,970,000	198,980,000
Net income	39,174,000	41,949,000	38,559,000
Equity in undistributed earnings, net of amortization	14,700,000	18,000,000	15,500,000
Cash distributions	$ 34,900,000	$ 10,500,000	$ 8,200,000