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, 2023	Feb. 28, 2022	Feb. 28, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares repurchased	3,403,900	4,475,200	2,379,800
Average cost per share	$ 94.95	$ 125.49	$ 90.87
Available for repurchase, as of end of year	$ 2,451.3	$ 774.5	$ 1,336.1

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
-Topic 505
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Reference 2: 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
-Publisher FASB
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration