Fair Value Of Assets And Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2012	Sep. 30, 2011
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Common Stock Subject to Repurchase	$ 171,398	$ 158,061
Financial assets and liabilities measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Assets	0	2,856
Fair Value of Liabilities	87,001	131,035
Common Stock Subject to Repurchase	171,398	158,061
Financial assets and liabilities measured on a recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Assets	0
Fair Value of Liabilities	0
Common Stock Subject to Repurchase	0
Financial assets and liabilities measured on a recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Assets	0
Fair Value of Liabilities	87,001
Common Stock Subject to Repurchase	0
Financial assets and liabilities measured on a recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Assets	0
Fair Value of Liabilities	0
Common Stock Subject to Repurchase	171,398
Foreign currency forward exchange contracts | Financial assets and liabilities measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Assets	0	2,856
Fair Value of Liabilities	1,067	0
Foreign currency forward exchange contracts | Financial assets and liabilities measured on a recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Assets	0
Fair Value of Liabilities	0
Foreign currency forward exchange contracts | Financial assets and liabilities measured on a recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Assets	0
Fair Value of Liabilities	1,067
Foreign currency forward exchange contracts | Financial assets and liabilities measured on a recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Assets	0
Fair Value of Liabilities	0
Interest rate swap agreements | Financial assets and liabilities measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	45,529	93,403
Interest rate swap agreements | Financial assets and liabilities measured on a recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	0
Interest rate swap agreements | Financial assets and liabilities measured on a recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	45,529
Interest rate swap agreements | Financial assets and liabilities measured on a recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	0
Cross currency swap agreements | Financial assets and liabilities measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	38,827	35,551
Cross currency swap agreements | Financial assets and liabilities measured on a recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	0
Cross currency swap agreements | Financial assets and liabilities measured on a recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	38,827
Cross currency swap agreements | Financial assets and liabilities measured on a recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	0
Natural gas hedge agreements | Financial assets and liabilities measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	120	187
Natural gas hedge agreements | Financial assets and liabilities measured on a recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	0
Natural gas hedge agreements | Financial assets and liabilities measured on a recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	120
Natural gas hedge agreements | Financial assets and liabilities measured on a recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	0
Gasoline and diesel fuel agreements | Financial assets and liabilities measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	1,458	1,894
Gasoline and diesel fuel agreements | Financial assets and liabilities measured on a recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	0
Gasoline and diesel fuel agreements | Financial assets and liabilities measured on a recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	1,458
Gasoline and diesel fuel agreements | Financial assets and liabilities measured on a recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of Liabilities	$ 0