Debt - Long-Term Debt (Parenthetical) (Detail)	Feb. 28, 2014	Feb. 28, 2013	Nov. 30, 2011
Term Loan [Member]
Debt Instrument [Line Items]
Long term debt due year	2019
7.375% Senior Notes, Due 2021 [Member]
Debt Instrument [Line Items]
Interest rate of debt	7.375%	7.375%	7.375%
Long term debt due year	2021	2021
Revolving Credit Facility, Due 2017 [Member]
Debt Instrument [Line Items]
Long term debt due year	2017	2017
Revolving Credit Facility, Due 2018 [Member]
Debt Instrument [Line Items]
Long term debt due year	2018
6.10% senior notes, due 2028 [Member]
Debt Instrument [Line Items]
Interest rate of debt	6.10%
Long term debt due year	2028	2028