Note 6 - Stock-Based Compensation (Details) (USD $) | 3 Months Ended | 9 Months Ended |
Share data in Millions, except Per Share data, unless otherwise specified | Nov. 30, 2013 | Nov. 24, 2012 | Nov. 30, 2013 | Nov. 24, 2012 |
Note 6 - Stock-Based Compensation (Details) [Line Items] | ' | ' | ' | ' |
Allocated Share-based Compensation Expense | $13,600,000 | $10,800,000 | $42,100,000 | $34,600,000 |
Allocated Share-based Compensation Expense, Net of Tax | 8,600,000 | 7,000,000 | 26,700,000 | 22,200,000 |
Stock Based Compensation Expense Impact On Diluted Earnings Per Share (in Dollars per share) | $0.04 | $0.03 | $0.12 | $0.10 |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount | ' | ' | 1,200,000 | 1,000,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) | 43.2 | ' | 43.2 | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | ' | ' | '5 years | ' |
Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period Minimum | ' | ' | '1 year | ' |
Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period Maximum | ' | ' | '3 years | ' |
Proceeds from Stock Options Exercised | ' | ' | 54,431,000 | 31,660,000 |
Employee Stock Option [Member] | ' | ' | ' | ' |
Note 6 - Stock-Based Compensation (Details) [Line Items] | ' | ' | ' | ' |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | 28,100,000 | ' | 28,100,000 | ' |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | ' | ' | '2 years 328 days | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | ' | ' | $22.28 | $22.95 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | ' | ' | '4 years 36 days | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | 131,100,000 | ' | 131,100,000 | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | ' | ' | '2 years 328 days | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | 93,700,000 | ' | 93,700,000 | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | ' | ' | 44,400,000 | 25,800,000 |
Proceeds from Stock Options Exercised | ' | ' | 54,400,000 | ' |
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options | ' | ' | 20,000,000 | ' |
Employee Stock Option [Member] | Minimum [Member] | ' | ' | ' | ' |
Note 6 - Stock-Based Compensation (Details) [Line Items] | ' | ' | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | ' | ' | '3 years | ' |
Employee Stock Option [Member] | Maximum [Member] | ' | ' | ' | ' |
Note 6 - Stock-Based Compensation (Details) [Line Items] | ' | ' | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | ' | ' | '5 years | ' |
Restricted Stock [Member] | ' | ' | ' | ' |
Note 6 - Stock-Based Compensation (Details) [Line Items] | ' | ' | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | ' | ' | '5 years | ' |
Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period Minimum | ' | ' | '1 year | ' |
Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period Maximum | ' | ' | '3 years | ' |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | $141,600,000 | ' | $141,600,000 | ' |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | ' | ' | '3 years 255 days | ' |
Employee Stock Option Issued Since May 10, 2010 [Member] | ' | ' | ' | ' |
Note 6 - Stock-Based Compensation (Details) [Line Items] | ' | ' | ' | ' |
Share Based Compensation Arrangement By Share Based Payment Award Requisite Service Period | ' | ' | '1 year | ' |
Employee Stock Option Issued Prior to May 10, 2010 [Member] | ' | ' | ' | ' |
Note 6 - Stock-Based Compensation (Details) [Line Items] | ' | ' | ' | ' |
Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period Minimum | ' | ' | '1 year | ' |
Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period Maximum | ' | ' | '3 years | ' |
Employee Stock Option Issued Since May 10, 2004 [Member] | ' | ' | ' | ' |
Note 6 - Stock-Based Compensation (Details) [Line Items] | ' | ' | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | ' | ' | '8 years | ' |
Employee Stock Option Issued Prior to May 10, 2004 [Member] | ' | ' | ' | ' |
Note 6 - Stock-Based Compensation (Details) [Line Items] | ' | ' | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | ' | ' | '10 years | ' |