Debt - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended					3 Months Ended	9 Months Ended						3 Months Ended	9 Months Ended			0 Months Ended		0 Months Ended
	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Oct. 10, 2012	Jun. 30, 2012	Oct. 21, 2011	Mar. 31, 2012 Convertible Senior Notes [Member]	Mar. 31, 2013 Convertible Senior Notes [Member]	Mar. 31, 2012 Convertible Senior Notes [Member]	Oct. 10, 2012 Convertible Senior Notes [Member]	Jun. 30, 2012 Convertible Senior Notes [Member]	Mar. 31, 2013 Maximum [Member]	Mar. 31, 2013 Minimum [Member]	Mar. 31, 2013 Revolving Credit Facility [Member]	Mar. 31, 2013 Revolving Credit Facility [Member]	Oct. 10, 2012 Revolving Credit Facility [Member]	Mar. 31, 2013 Registration Rights Agreement [Member] Convertible Senior Notes [Member]	Oct. 10, 2012 Multi-Currency Revolving Credit Facility [Member]	Oct. 10, 2012 Letters of Credit [Member]	Oct. 10, 2012 Term Loan And Revolving Credit Facility [Member]	Mar. 31, 2013 Term Facility [Member]	Oct. 10, 2012 Term Facility [Member]	Oct. 15, 2012 Cash [Member]
Debt Disclosure [Line Items]
Short-term borrowings outstanding		$ 885,000			$ 227,000
Lines of credit		46,500,000			17,800,000
Unsecured revolving credit facility, period of agreement, in years																		5 years		5 years
Current borrowing capacity																		550,000,000
Letters of credit																			60,000,000
Increase in line of credit facility				250,000,000
Aggregate revolving commitment																		750,000,000		300,000,000
Required consolidated EBITDA to consolidated cash interest expense as per New Credit Agreement												3.5:1.0
Required consolidated total debt to consolidated EBITDA as per New Credit Agreement													3.5:1.0
Required consolidated total debt to consolidated EBITDA as per New Credit Agreement after acquisition		4.0:1.0
Amount of outstanding letters of credit														6,800,000	6,800,000	8,700,000
Borrowings under the term facility																					292,500,000	300,000,000	100,000,000
Convertible senior notes paid										400,000,000
Current portion of long-term debt		30,403,000			395,409,000									30,000,000	30,000,000
Long-term debt non current		262,566,000			0									262,500,000	262,500,000
Unused available credit														743,200,000	743,200,000
Fee and other expenses															6,100,000
Write-off of debt issuance costs														0	1,100,000
Convertible Senior Notes outstanding								0			400,000,000
Interest rate								1.25%
Convertible senior notes, interest expense	1,300,000	1,500,000	3,800,000
Noncash interest expense							4,100,000	5,000,000	12,500,000
Amortization of discount, convertible senior notes	$ 200,000	$ 300,000	$ 600,000
Period of effectiveness of registration statement, maximum																	Five years and three months
Number of business days to file registration statement						7