XML 148 R120.htm IDEA: XBRL DOCUMENT v2.4.0.6
Employee Benefit Plans - Fair Value of Pension Plan Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Sep. 30, 2011
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets $ 168,621 [1] $ 143,668 [1]
U.S. defined benefit plan assets [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets 66,415 [1] 56,609 [1]
U.S. defined benefit plan assets [Member] | Mutual funds [Member] | Equity [Member] | Level 1 [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets 20,520 [1] 16,516 [1]
U.S. defined benefit plan assets [Member] | Common collective trusts [Member] | Equity [Member] | Level 2 [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets 25,781 [1] 21,024 [1]
U.S. defined benefit plan assets [Member] | Common collective trusts [Member] | Fixed income [Member] | Level 2 [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets 19,507 [1] 18,402 [1]
U.S. defined benefit plan assets [Member] | Other [Member] | Level 2 [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets 607 [1] 667 [1]
International defined benefit plan assets [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets 102,206 [1] 87,059 [1]
International defined benefit plan assets [Member] | Common collective trusts [Member] | Equity [Member] | Level 2 [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets 38,507 [1] 29,532 [1]
International defined benefit plan assets [Member] | Common collective trusts [Member] | Fixed income [Member] | Level 2 [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets 15,661 [1] 11,467 [1]
International defined benefit plan assets [Member] | Other [Member] | Level 2 [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets 7,387 [1] 8,073 [1]
International defined benefit plan assets [Member] | Insurance contracts [Member] | General [Member] | Level 2 [Member]
    
Schedule of Fair Values of Plan Assets [Line Items]    
Fair value of defined benefit plan assets $ 40,651 [1] $ 37,987 [1]
[1] The fair value measurements of the Company's defined benefit plan assets are based on unadjusted quoted prices for identical assets and liabilities in active markets (Level 1) for mutual funds and observable market price inputs (Level 2) for common collective trusts and other investments. Each collective trust's valuation is based on its calculation of net asset value per share reflecting the fair value of its underlying investments. Since each of these collective trusts allows redemptions at net asset value per share at the measurement date, its valuation is categorized as a Level 2 fair value measurement. The fair values of insurance contracts and other investments are also based on observable market price inputs (Level 2).