Cancellation Reserves (Schedule Of Cancellation Reserves Accrual) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of period	$ 136.6	$ 148.8	$ 139.2	$ 144.7
Cancellations	(22.4)	(25.2)	(70.2)	(80.3)
Provision for future cancellations	17.4	20.7	62.6	79.9
Balance as of end of period	$ 131.6	$ 144.3	$ 131.6	$ 144.3