Restatement (Details) (USD $) In Thousands, unless otherwise specified	Nov. 25, 2011	Feb. 28, 2011	Nov. 26, 2010
The impact of restatement in the Corporation's consolidated
Deferred and refundable income taxes	$ 57,400	$ 64,898	$ 85,694
Total current assets	720,167	715,771	709,135
Total assets	1,557,280	1,547,249	1,526,322
Retained earnings	1,228,269	1,185,855	1,177,415
Total shareholders' equity	766,977	763,758	724,621
As Previously [Member]
The impact of restatement in the Corporation's consolidated
Deferred and refundable income taxes			70,847
Total current assets			694,289
Total assets			1,511,476
Retained earnings			1,162,568
Total shareholders' equity			709,774
As Restated [Member]
The impact of restatement in the Corporation's consolidated
Deferred and refundable income taxes			85,694
Total current assets			709,135
Total assets			1,526,322
Retained earnings			1,177,415
Total shareholders' equity			$ 724,621

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References+ Details

Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References+ Details

- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

+ References+ Details