Reconciliation of Stock Option Activity (Detail) (USD $)	12 Months Ended
Mar. 03, 2012 Year	Feb. 26, 2011	Feb. 27, 2010
Options Outstanding
Beginning Balance	3,396,673
Granted	491,766
Exercised	(1,490,177)
Forfeited	(57,613)
Ending Balance	2,340,649	3,396,673
Options exercisable at period end	870,692
Weighted Average Exercise Price Per Share
Beginning Balance	$ 10.41
Granted	$ 19.58
Exercised	$ 10.76
Forfeited	$ 14.86
Ending Balance	$ 12.00	$ 10.41
Options exercisable at period end	$ 12.13
Weighted Average Remaining Contractual Life (Years)
Ending Balance	6.4
Options exercisable at period end	3.9
Aggregate Intrinsic Value
Exercised	$ 14,698,000	$ 4,155,000	$ 1,585,000
Ending Balance	27,189,000
Options exercisable at period end	$ 9,854,000

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

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The weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated during the reporting period due to noncompliance with plan terms during the reporting period.

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Net number of share options (or share units) granted during the period.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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