Derivative Instruments - Derivatives by Balance Sheet Location (Details) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2013	Sep. 28, 2012
Derivative instruments
Fair value of derivative assets	$ 823	$ 947
Fair value of derivative liabilities	73,014	91,890
Designated as hedging instrument
Derivative instruments
Fair value of derivative liabilities	55,837	91,890
Foreign exchange forward | Prepayments | Not designated as hedging instrument
Derivative instruments
Fair value of derivative assets	306	251
Gasoline and diesel fuel agreements | Prepayments | Not designated as hedging instrument
Derivative instruments
Fair value of derivative assets	517	696
Interest rate swap agreements | Accrued expenses | Designated as hedging instrument
Derivative instruments
Fair value of derivative liabilities	9,940	0
Interest rate swap agreements | Other noncurrent liabilities | Designated as hedging instrument
Derivative instruments
Fair value of derivative liabilities	26,134	46,484
Cross currency swap agreements | Other noncurrent liabilities | Not designated as hedging instrument
Derivative instruments
Fair value of derivative liabilities	17,177	0
Cross currency swap agreements | Other noncurrent liabilities | Designated as hedging instrument
Derivative instruments
Fair value of derivative liabilities	$ 19,763	$ 45,406