Income Taxes - Reconciliation of Corporation's Income Tax Expense from Continuing Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013
Income Tax Disclosure [Abstract]
Income tax expense at statutory rate	$ 38,747	$ 39,629	$ 30,070
State and local income taxes, net of federal tax benefit	3,085	7,617	3,638
Corporate-owned life insurance	25,861	(1,625)	(1,682)
International items, net of foreign tax credits	(12,258)	4,580	1,880
Accruals and settlements	(1,853)	793	233
Valuation allowance	(4,244)	12,606	2,209
Domestic production activities deduction	(5,250)	(3,815)	(1,813)
Other	1,511	2,919	1,461
Income tax expense	$ 45,599	$ 62,704	$ 35,996