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. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares repurchased	2,379,800	6,971,100	13,634,700
Average cost per share	$ 90.87	$ 80.56	$ 66.22
Available for repurchase, as of end of year	$ 1,336.1	$ 1,552.3	$ 2,113.9

Number of shares that have been repurchased during the period and are being held in treasury.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Period Type:	duration