Stock And Stock-Based Incentive Plans (Stock Option Activity) (Details) - Stock Option - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding as of beginning of year, Number of Shares	6,266,000
Options granted, Number of Shares	922,475	1,607,401	1,601,489
Options exercised, Number of Shares	(1,302,000)
Options forfeited or expired, Number of Shares	(90,000)
Outstanding as of end of year, Number of Shares	5,796,000	6,266,000
Exercisable as of end of year, Number of Shares	3,031,000
Outstanding as of beginning of year, Weighted Average Exercise Price	$ 67.57
Options granted, Weighted Average Exercise Price	136.88
Options exercised, Weighted Average Exercise Price	61.30
Options forfeited or expired, Weighted Average Exercise Price	90.25
Outstanding as of end of year, Weighted Average Exercise Price	79.66	$ 67.57
Exercisable as of end of year, Weighted Average Exercise Price	$ 68.72
Outstanding as of end of year, Weighted Average Remaining Contractual Life (Years)	4 years 2 months 12 days
Exercisable as of end of year, Weighted Average Remaining Contractual Life (Years)	3 years 6 months
Outstanding as of end of year, Aggregate Intrinsic Value	$ 196,694
Exercisable as of end of year, Aggregate Intrinsic Value	$ 125,141