Fair Value Measurements (Fair Value Level 3 Quantitative Information) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified			12 Months Ended
Aug. 25, 2012	Aug. 27, 2011	Aug. 25, 2012 Auction Rate Securities [Member] Discounted Cash Flow Technique [Member] Minimum [Member]	Aug. 25, 2012 Auction Rate Securities [Member] Discounted Cash Flow Technique [Member] Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Student loan ARS	$ 9,074	$ 10,627
Projected ARS Yield			2.02%	2.16%
Discount for lack of marketability			2.95%	3.45%

Carrying amount of loans classified as held-for-sale which are offered to individuals to assist in payment of the costs of higher education or qualifying vocational and professional schools. This item represents a broad category of loans including federally subsidized and personal loans. Personal loans include direct and cosigned loans.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a)(4))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Name:	us-gaap_LoansHeldForSaleConsumerInstallmentStudent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant