Quarterly Financial Data (Unaudited) (Schedule of Quarterly Data) (Details) - USD ($) $ / shares in Units, $ 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, 2016	Jun. 30, 2015	Jun. 30, 2014
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 737,547	$ 736,663	$ 743,437	$ 667,727	$ 680,565	$ 652,351	$ 679,759	$ 596,938	$ 2,885,374	$ 2,609,613	$ 2,107,822
Gross profit	150,081	159,908	166,261	137,881	155,725	149,609	150,359	107,162	614,131	562,855	528,282
Operating income (loss)	(65,138)	71,148	90,078	54,272	77,339	68,154	67,997	20,372	150,360	233,862	216,746
Income before income taxes and equity in earnings of equity-method investees	(77,572)	72,863	80,713	42,404	76,265	59,514	59,183	17,907	118,408	212,869	197,160
Net income (loss)	$ (88,597)	$ 48,788	$ 58,080	$ 29,158	$ 72,152	$ 38,001	$ 39,653	$ 15,155	$ 47,429	$ 164,962	$ 129,922
Net income (loss) per common share:
Basic (USD per share)	$ (0.86)	$ 0.47	$ 0.56	$ 0.28	$ 0.70	$ 0.37	$ 0.39	$ 0.15	$ 0.46	$ 1.62	$ 1.33
Diluted (USD per share)	$ (0.86)	$ 0.47	$ 0.56	$ 0.28	$ 0.69	$ 0.37	$ 0.38	$ 0.15	$ 0.46	$ 1.60	$ 1.30