Debt - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended					0 Months Ended	12 Months Ended								0 Months Ended	12 Months Ended				12 Months Ended		12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2014 First Installment [Member]	Feb. 28, 2014 Future Quarterly Installment Payments [Member]	Aug. 09, 2013 Accounts Receivable Facility [Member]	Feb. 28, 2014 Accounts Receivable Facility [Member]	Feb. 28, 2013 Accounts Receivable Facility [Member]	Jan. 24, 2014 Credit Agreement [Member]	Aug. 09, 2013 Credit Agreement [Member]	Feb. 28, 2014 Publicly Traded [Member]	Feb. 28, 2013 Publicly Traded [Member]	Feb. 28, 2014 Non Publicly Traded [Member]	Feb. 28, 2013 Non Publicly Traded [Member]	Jan. 24, 2014 Series A Preferred Stock [Member] Credit Agreement [Member]	Feb. 29, 2012 7.375% Senior Notes, Due 2021 [Member]	Feb. 28, 2014 7.375% Senior Notes, Due 2021 [Member]	Feb. 28, 2013 7.375% Senior Notes, Due 2021 [Member]	Nov. 30, 2011 7.375% Senior Notes, Due 2021 [Member]	Feb. 28, 2014 Revolving Credit Facility [Member]	Aug. 09, 2013 Revolving Credit Facility [Member]	Feb. 28, 2014 Term Loan Facility [Member]	Aug. 09, 2013 Term Loan Facility [Member]	Feb. 28, 2014 Letters of Credit [Member]
Debt Disclosure [Line Items]
Debt due within one year	$ 20,000	$ 0
Interest on credit facility borrowings																				3.10%		4.00%
Current borrowing capacity										600,000											250,000		350,000	145,800
Balances outstanding under the revolving credit facility																								27,668
Interest paid in cash on long-term debt	46,869	19,184	34,946
Aggregate principal amount of senior notes																			225,000
Interest rate of debt																	7.375%	7.375%	7.375%
Remaining unamortized discount and deferred financing costs related to notes written off																21,711
Cost charged on payments of notes																9,101
Loss on extinguishment of debt			(30,812)													30,812
Fair value of Corporations publicly and non-publicly traded debt											234,698	233,577	344,500	61,200
Carrying value of Corporations publicly and non-publicly traded debt	539,114	286,381									225,181	225,181	344,500	61,200
Installment payment				10,000
Scheduled payments					5,000
Loan Facility and the Revolving Credit Facility	150,000
Final Payment	235,000
Discount amount on term loan facility																							10,750
Restricted payment to parent															50,000
Maximum principal amount under the modified Credit Agreement									300,000
Available financing of receivables purchase agreement							50,000
Balances outstanding under the amended and restated receivables purchase agreement							$ 0	$ 0
Federal fund rate						0.50%
Annual facility fee						0.80%