Cancellation Reserves (Schedule Of Cancellation Reserves Accrual) (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 144.7	$ 124.5
Cancellations	(103.6)	(94.7)
Provision for future cancellations	98.1	114.9
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 139.2	$ 144.7