Cancellation Reserves (Schedule Of Cancellation Reserves Accrual) (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 124.5	$ 117.9
Cancellations	(94.7)	(65.6)
Provision for future cancellations	114.9	72.2
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 144.7	$ 124.5