Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidating Statements of Cash Flows (Detail)

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Condensed Consolidating Statements of Cash Flows (Detail) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
May 31, 2012
May 31, 2011
Guarantor Obligations [Line Items]    
Net cash provided by (used in) operating activities $ 129,314 $ 95,098
Proceeds from sale of property, plant and equipment 8,486 359
Proceeds from sale of businesses, net of transaction costs   3,463
Capital expenditures (17,491) (14,843)
Business acquisitions, net of cash acquired (29,734) (160,047)
Net cash used in investing activities (38,739) (171,068)
Net repayments on revolving credit facilities (58,167) 14
Issuance of term loans   100,000
Principal repayments on term loan (1,250)  
Repurchases of 2% Convertible Notes (102) (34)
Proceeds on 5.625% Senior Note issuance 300,000  
Redemption of 6.875% Senior Notes (250,000)  
Debt issuance costs (5,340) (5,197)
Purchase of treasury shares (39,282)  
Stock option exercises and related tax benefits 6,392 7,285
Cash dividends (2,748) (2,716)
Net cash provided by (used in) financing activities (50,497) 99,352
Effect of exchange rate changes on cash (4,150) 4,695
Net increase in cash and cash equivalents 35,928 28,077
Cash and cash equivalents-beginning of period 44,221 40,222
Cash and cash equivalents-end of period 80,149 68,299
Parent
    
Guarantor Obligations [Line Items]    
Net cash provided by (used in) operating activities 56,851 15,423
Proceeds from sale of property, plant and equipment 2,100  
Capital expenditures (4,367) (3,354)
Business acquisitions, net of cash acquired (290)  
Net cash used in investing activities (2,557) (3,354)
Net repayments on revolving credit facilities (57,990)  
Issuance of term loans   100,000
Intercompany loan activity (2,947) (95,141)
Principal repayments on term loan (1,250)  
Repurchases of 2% Convertible Notes (102) (34)
Proceeds on 5.625% Senior Note issuance 300,000  
Redemption of 6.875% Senior Notes (250,000)  
Debt issuance costs (5,340) (5,197)
Purchase of treasury shares (39,282)  
Stock option exercises and related tax benefits 6,392 7,285
Cash dividends (2,748) (2,716)
Net cash provided by (used in) financing activities (53,267) 4,197
Net increase in cash and cash equivalents 1,027 16,266
Cash and cash equivalents-beginning of period 872 5,055
Cash and cash equivalents-end of period 1,899 21,321
Guarantors
    
Guarantor Obligations [Line Items]    
Net cash provided by (used in) operating activities 13,659 (2,123)
Proceeds from sale of property, plant and equipment 137 191
Capital expenditures (2,797) (3,537)
Business acquisitions, net of cash acquired   (350)
Net cash used in investing activities (2,660) (3,696)
Intercompany loan activity (10,999) 5,819
Net cash provided by (used in) financing activities (10,999) 5,819
Non-Guarantors
    
Guarantor Obligations [Line Items]    
Net cash provided by (used in) operating activities 58,804 83,331
Proceeds from sale of property, plant and equipment 6,249 168
Proceeds from sale of businesses, net of transaction costs   3,463
Capital expenditures (10,327) (7,952)
Business acquisitions, net of cash acquired (29,444) (159,697)
Net cash used in investing activities (33,522) (164,018)
Net repayments on revolving credit facilities (177) 14
Intercompany loan activity 13,946 89,322
Cash dividends   (1,533)
Net cash provided by (used in) financing activities 13,769 87,803
Effect of exchange rate changes on cash (4,150) 4,695
Net increase in cash and cash equivalents 34,901 11,811
Cash and cash equivalents-beginning of period 43,349 35,167
Cash and cash equivalents-end of period 78,250 46,978
Eliminations
    
Guarantor Obligations [Line Items]    
Net cash provided by (used in) operating activities   (1,533)
Cash dividends   1,533
Net cash provided by (used in) financing activities   $ 1,533