Income Taxes (Schedule Of Income Tax Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Income Tax Disclosure [Abstract]
Current, Federal	$ 209,447	$ 225,858	$ 218,497
Current, State	44,678	47,797	49,596
Current, Total	254,125	273,655	268,093
Deferred, Federal	(27,971)	146	3,601
Deferred, State	(7,816)	(1,248)	(1,301)
Deferred, Total	(35,787)	(1,102)	2,300
Income Tax Expense (Benefit), Total	$ 218,338	$ 272,553	$ 270,393