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, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	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, 2016	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Net sales	$ 1,880,549	$ 1,628,082	$ 1,772,157	$ 1,630,888	$ 1,678,633	$ 1,464,193	$ 1,583,549	$ 1,428,922	$ 1,444,419	$ 1,404,235	$ 1,328,024	$ 1,171,805	$ 6,911,676	$ 6,155,297	$ 5,348,483
Long-lived assets	1,069,574				1,222,088								1,069,574	1,222,088
Net Assets	2,452,473				2,392,826								2,452,473	2,392,826
Operating Segments [Member] | U.S. [Member]
Segment Reporting Information [Line Items]
Net sales													2,220,546	1,930,526	1,626,814
Long-lived assets	420,338				642,197								420,338	642,197
Net Assets	286,537				159,906								286,537	159,906
Operating Segments [Member] | Germany [Member]
Segment Reporting Information [Line Items]
Net sales													1,571,405	1,696,559	1,722,739
Long-lived assets	275,912				134,841								275,912	134,841
Net Assets	305,233				580,412								305,233	580,412
Operating Segments [Member] | Other Europe [Member]
Segment Reporting Information [Line Items]
Net sales													1,442,740	1,141,343	969,021
Long-lived assets	247,590				320,884								247,590	320,884
Net Assets	1,361,174				1,167,508								1,361,174	1,167,508
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Net sales													1,676,985	1,386,869	$ 1,029,909
Long-lived assets	125,734				124,166								125,734	124,166
Net Assets	$ 499,529				$ 485,000								$ 499,529	$ 485,000