Income Taxes - Reconciliation of Corporation's Income Tax Expense from Continuing Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Income Tax Disclosure [Abstract]
Income tax expense at statutory rate	$ 39,629	$ 30,070	$ 34,235
State and local income taxes, net of federal tax benefit	7,617	3,638	3,870
Corporate-owned life insurance	(1,625)	(1,682)	(726)
International items, net of foreign tax credits	4,580	1,880	135
Accruals and settlements	793	233	4,031
Valuation allowance	12,606	2,209	(1,163)
Other	(896)	(352)	235
Income tax at effective tax rate	$ 62,704	$ 35,996	$ 40,617

Income tax reconciliation accruals and settlements.

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Income tax reconciliation foreign net of tax credits.

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Income tax reconciliation nondeductible income expense life insurance.

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Income Tax Reconciliation Valuation Allowance

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Article 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Income Tax Expense (or Benefit)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a),(b)

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.

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