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, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares repurchased	648,500	30,000.0	648,500	3,403,900
Average Cost Per Share	$ 64.60	$ 87.70	$ 64.60	$ 94.95
Available for repurchase, as of end of period	$ 2,409.4	$ 2,451.3	$ 2,409.4	$ 2,451.3