Note 6 - Stock-Based Compensation (Details) (USD $) | 3 Months Ended | 6 Months Ended |
Share data in Millions, except Per Share data, unless otherwise specified | Aug. 31, 2013 | Aug. 25, 2012 | Aug. 31, 2013 | Aug. 25, 2012 |
Note 6 - Stock-Based Compensation (Details) [Line Items] | | | | |
Allocated Share-based Compensation Expense | $13,600,000 | $11,000,000 | $28,400,000 | $23,800,000 |
Allocated Share-based Compensation Expense, Net of Tax | 8,800,000 | 6,700,000 | 18,100,000 | 15,100,000 |
Stock Based Compensation Expense Impact On Diluted Earnings Per Share (in Dollars per share) | $0.04 | $0.03 | $0.08 | $0.07 |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount | | | 800,000 | 700,000 |
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 | | | 36,230,000 | 29,174,000 |
Employee Stock Option [Member] | | | | |
Note 6 - Stock-Based Compensation (Details) [Line Items] | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | 30,900,000 | | 30,900,000 | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | | | 3 years 73 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 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | 128,400,000 | | 128,400,000 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | | | 2 years 255 days | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | 98,600,000 | | 98,600,000 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | | | 27,500,000 | 24,300,000 |
Proceeds from Stock Options Exercised | | | 36,200,000 | |
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options | | | 15,600,000 | |
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 | $154,200,000 | | $154,200,000 | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | | | 3 years 328 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 | |