Cancellation Reserves (Schedule Of Cancellation Reserves Accrual) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2025	Aug. 31, 2024
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of period	$ 138.7	$ 131.3	$ 133.9	$ 128.3
Cancellations	(19.9)	(22.6)	(39.9)	(43.9)
Provision for future cancellations	17.1	25.0	41.9	49.3
Balance as of end of period	$ 135.9	$ 133.7	$ 135.9	$ 133.7