Income Taxes (Schedule Of Income Tax Provision) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Income Taxes [Abstract]
Current, Federal	$ 283,174	$ 232,652	$ 223,548
Current, State	38,747	30,557	30,439
Current, Total	321,921	263,209	253,987
Deferred, Federal	(15,129)	4,705	54
Deferred, State	(2,056)	(847)	(926)
Deferred, Total	(17,185)	3,858	(872)
Income Tax Expense (Benefit), Total	$ 304,736	$ 267,067	$ 253,115

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.