Business Segment Data - Schedule of Sales Long-Lived and Net Assets by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Net sales	$ 1,678,633	$ 1,464,193	$ 1,583,549	$ 1,428,922	$ 1,444,419	$ 1,404,235	$ 1,328,024	$ 1,171,805	$ 1,182,235	$ 1,061,772	$ 1,055,642	$ 998,193	$ 6,155,297	$ 5,348,483	$ 4,297,842
Long-lived assets	1,222,088				691,887								1,222,088	691,887
Net Assets	2,392,826				1,793,021								2,392,826	1,793,021
Operating Segments [Member] | U.S. [Member]
Segment Reporting Information [Line Items]
Net sales													1,930,526	1,626,814	1,181,113
Long-lived assets	642,197				339,226								642,197	339,226
Net Assets	159,906				124,339								159,906	124,339
Operating Segments [Member] | Germany [Member]
Segment Reporting Information [Line Items]
Net sales													1,696,559	1,722,739	1,482,036
Long-lived assets	134,841				141,987								134,841	141,987
Net Assets	580,412				563,972								580,412	563,972
Operating Segments [Member] | Other Europe [Member]
Segment Reporting Information [Line Items]
Net sales													1,141,343	969,021	819,074
Long-lived assets	320,884				141,481								320,884	141,481
Net Assets	1,167,508				950,027								1,167,508	950,027
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Net sales													1,386,869	1,029,909	$ 815,619
Long-lived assets	124,166				69,193								124,166	69,193
Net Assets	$ 485,000				$ 154,683								$ 485,000	$ 154,683