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, 2013	Feb. 29, 2012	Feb. 28, 2011
U.S., Pension Plans [Member] | Short-term investments [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	$ 713	$ 710
U.S., Pension Plans [Member] | Short-term investments [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets
U.S., Pension Plans [Member] | Short-term investments [Member] | Significant other observable inputs (Level 2) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	713	710
U.S., Pension Plans [Member] | Equity securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	41,106	41,322
U.S., Pension Plans [Member] | Equity securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets
U.S., Pension Plans [Member] | Equity securities [Member] | Significant other observable inputs (Level 2) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	41,106	41,322
U.S., Pension Plans [Member] | Fixed-income funds [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	38,223	39,510
U.S., Pension Plans [Member] | Fixed-income funds [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets
U.S., Pension Plans [Member] | Fixed-income funds [Member] | Significant other observable inputs (Level 2) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	38,223	39,510
International, Pension Plans [Member] | Short-term investments [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	651	1,163
International, Pension Plans [Member] | Short-term investments [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets
International, Pension Plans [Member] | Short-term investments [Member] | Significant other observable inputs (Level 2) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	651	1,163
International, Pension Plans [Member] | Equity securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	8,193	7,753
International, Pension Plans [Member] | Equity securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets
International, Pension Plans [Member] | Equity securities [Member] | Significant other observable inputs (Level 2) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	8,193	7,753
International, Pension Plans [Member] | Fixed-income funds [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	15,635	15,883
International, Pension Plans [Member] | Fixed-income funds [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets
International, Pension Plans [Member] | Fixed-income funds [Member] | Significant other observable inputs (Level 2) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	15,635	15,883
Pension Plans [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	104,521	106,341	107,881
Pension Plans [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets
Pension Plans [Member] | Significant other observable inputs (Level 2) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Fair value of defined benefit pension plan assets	$ 104,521	$ 106,341