Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	May 05, 2012	Aug. 27, 2011
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	$ 5,542	$ 11,872
Other long-term assets	71,202	61,259
Total	76,744	73,131
Level 1 [Member]
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	5,542	11,872
Other long-term assets	60,394	55,390
Total	65,936	67,262
Level 2 [Member]
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	0	0
Other long-term assets	10,808	5,869
Total	10,808	5,869
Level 3 [Member]
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	0	0
Other long-term assets	0	0
Total	$ 0	$ 0