Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The amount of cash paid for interest during the period.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Debt - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013	Aug. 09, 2013
Debt Disclosure [Line Items]
Debt due within one year	$ 0us-gaap_DebtCurrent	$ 20,000us-gaap_DebtCurrent
Interest paid in cash on debt	31,311us-gaap_InterestPaid	46,869us-gaap_InterestPaid	19,184us-gaap_InterestPaid
Carrying value of Corporation's non-publicly traded debt	250,000us-gaap_DebtInstrumentCarryingAmount	340,000us-gaap_DebtInstrumentCarryingAmount
Non Publicly Traded [Member] \| Level 2 [Member]
Debt Disclosure [Line Items]
Total fair value of non-publicly traded debt	251,789	344,500
Carrying value of Corporation's non-publicly traded debt	254,300	344,500
Revolving Credit Facility [Member]
Debt Disclosure [Line Items]
Interest on credit facility borrowings	2.60%
Current borrowing capacity				250,000
Term Loan Facility [Member]
Debt Disclosure [Line Items]
Interest on credit facility borrowings	2.70%
Current borrowing capacity				350,000
Letters of Credit [Member]
Debt Disclosure [Line Items]
Current borrowing capacity	123,500
Amount of letters of credit outstanding under revolving credit facilities	$ 27,668