Cancellation Reserves (Schedule Of Cancellation Reserves Accrual) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2024	Nov. 30, 2023
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of period	$ 133.7	$ 136.6	$ 128.3	$ 139.2
Cancellations	(24.9)	(22.4)	(68.8)	(70.2)
Provision for future cancellations	25.7	17.4	75.0	62.6
Balance as of end of period	$ 134.5	$ 131.6	$ 134.5	$ 131.6