Annual report pursuant to Section 13 and 15(d)

Supplemental disclosures of cash flow information and noncash investing and financing activities - Additional Information (Detail)

 v2.3.0.11
Supplemental disclosures of cash flow information and noncash investing and financing activities - Additional Information (Detail) (USD $)
12 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2009
Other Significant Noncash Transactions [Line Items]      
Cash paid for income taxes $ 46,200,000 $ 49,700,000 $ 50,900,000
Stock options shares of common stock exercised 14,834   785
Shares of common stock surrender as a result of option exercise 9,096   348
Fair market value of common stock surrender as a result of option exercise $ 561,000   $ 22,000