Income Taxes - Reconciliation of Corporation's Income Tax Expense from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Income Tax Disclosure [Abstract]
Income tax expense at statutory rate	$ 66,846	$ 38,747	$ 39,629
State and local income taxes, net of federal tax benefit	3,715	3,085	7,617
Corporate-owned life insurance	(2,545)	25,861	(1,625)
International items, net of foreign tax credits	802	(12,258)	4,580
Uncertain tax benefits and related items	(1,124)	(1,853)	793
Valuation allowance	(731)	(4,244)	12,606
Domestic production activities deduction	(4,690)	(5,250)	(3,815)
Other	(1,126)	1,511	2,919
Income tax expense	$ 61,147	$ 45,599	$ 62,704