Stock and Stock-Based Incentive Plans (Schedule of Common Stock Repurchases) (Details) - Share Repurchase Program - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2024	Nov. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares repurchased	1,505,100	648,500	4,327,500	648,500
Average Cost Per Share	$ 76.26	$ 64.60	$ 75.05	$ 64.60
Available for repurchase, as of end of period	$ 2,035.3	$ 2,409.4	$ 2,035.3	$ 2,409.4