Note 10 - Derivative Financial Instruments (Detail) (USD $) In Millions, unless otherwise specified	Nov. 30, 2012	Aug. 30, 2011
Derivative, Notional Amount (in Dollars)		$ 320
Derivative, Lower Fixed Interest Rate Range	1.25%	1.50%
Derivative, Average Fixed Interest Rate	1.59%	1.80%

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant