Retirement and Postretirement Benefit Plans - Summary of Fair Value of Defined Benefit Pension Plan Assets, Pension Plans (Detail) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013
U.S., Pension Plans [Member] | Short-term investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	$ 709	$ 719
U.S., Pension Plans [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	42,473	42,599
U.S., Pension Plans [Member] | Fixed-income funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	41,870	38,154
International, Pension Plans [Member] | Short-term investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	157	259
International, Pension Plans [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	8,012	9,470
International, Pension Plans [Member] | Fixed-income funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	15,072	13,693
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	108,293	104,894	104,521
Level 2 [Member] | U.S., Pension Plans [Member] | Short-term investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	709	719
Level 2 [Member] | U.S., Pension Plans [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	42,473	42,599
Level 2 [Member] | U.S., Pension Plans [Member] | Fixed-income funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	41,870	38,154
Level 2 [Member] | International, Pension Plans [Member] | Short-term investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	157	259
Level 2 [Member] | International, Pension Plans [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	8,012	9,470
Level 2 [Member] | International, Pension Plans [Member] | Fixed-income funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	15,072	13,693
Level 2 [Member] | Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of defined benefit pension plan assets	$ 108,293	$ 104,894