Debt - Schedule of Total Debt (Detail) € in Millions	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	May 27, 2015 EUR (€)	May 11, 2015 USD ($)
Debt Instrument [Line Items]
Short-term borrowings outstanding	$ 1,226,000	$ 0
Total debt, Book Value	1,335,509,000	1,396,974,000
Short-term debt, Book Value	(1,226,000)	0
Current portion of long-term debt	(59,715,000)	(86,641,000)
Total long-term debt, Book Value	1,274,568,000	1,310,333,000
Short-term debt, Fair Value	1,226,000
Total debt, Fair Value	1,364,723,000	1,416,358,000
Short-term debt, Fair Value	(1,226,000)
Total long-term debt, Fair Value	1,303,782,000	1,329,717,000
Innovative Systems GmbH [Member]
Debt Instrument [Line Items]
Total debt, Book Value	56,095,000	82,805,000
Total debt, Fair Value	56,095,000	82,805,000
Senior Notes [Member]
Debt Instrument [Line Items]
Unamortized Senior Note issuance costs	(5,964,000)	(6,173,000)
Senior Notes [Member] | 4.150 Percent Senior Notes [Member]
Debt Instrument [Line Items]
Total debt, Book Value	400,000,000	400,000,000
Unamortized debt discount	(2,349,000)	(2,407,000)		$ (2,700,000)
Unamortized Senior Note issuance costs				$ (3,800,000)
Total debt, Fair Value	413,640,000	417,440,000
Senior Notes [Member] | 2.000 Percent Senior Notes [Member]
Debt Instrument [Line Items]
Total debt, Book Value	393,223,000	388,710,000
Unamortized debt discount	(1,245,000)	(1,283,000)	€ (1.4)
Unamortized Senior Note issuance costs | €			€ (2.6)
Total debt, Fair Value	408,797,000	390,654,000
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Total debt, Book Value	11,523,000	12,322,000
Total debt, Fair Value	11,523,000	12,322,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total debt, Book Value	483,000,000	523,000,000
Total debt, Fair Value	$ 483,000,000	$ 523,000,000