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Stock And Stock-Based Incentive Plans (Schedule Of Common Stoc Repurchases) (Details) - Share Repurchase Program - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Feb. 29, 2024
Feb. 28, 2023
Feb. 28, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares repurchased 1,334,100 3,403,900 4,475,200
Average cost per share $ 68.33 $ 94.95 $ 125.49
Available for repurchase, as of end of year $ 2,360.1 $ 2,451.3 $ 774.5