Deferred Costs - Deferred Costs and Future Payment Commitments (Detail) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Prepaid expenses and other	$ 100,282	$ 93,873
Other assets	428,090	332,159
Deferred cost assets	528,372	426,032
Other current liabilities	(84,860)	(61,282)
Other liabilities	(149,190)	(92,153)
Deferred cost liabilities	(234,050)	(153,435)
Net deferred costs	$ 294,322	$ 272,597	$ 306,217	$ 275,246