Summary of Significant Accounting Policies (Details 3) (USD $) In Thousands	1 Months Ended	3 Months Ended
	Jun. 30, 2011	Jun. 25, 2011	Dec. 25, 2010
Accumulated other comprehensive income (loss)
Foreign currency translation adjustment		$ 64,810	$ 34,693
Actuarial gain in defined benefit pension plan		30,017	28,952
Loss on cash flow hedge		(3,568)
Accumulated other comprehensive income (loss)		91,259	63,645
Derivative Instrument
Debt instrument issued, face amount		150,000
Notional amount of derivative instrument		130,000
Payment to counterparty to settle the derivative contract	3,568
Loss on interest rate cash flow hedge derivative, recorded in accumulated other comprehensive income		$ 3,568