Condensed Statements of Consolidated Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net sales	$ 885,443	$ 827,665	$ 2,589,996	$ 2,175,553
Cost of sales	629,884	588,141	1,839,724	1,555,245
Gross profit	255,559	239,524	750,272	620,308
Selling, distribution and administrative expense, including depreciation	189,456	183,080	556,865	465,312
Intangible impairment	31,594	0	31,594	0
Operating income	34,509	56,444	161,813	154,996
Interest expense, net	9,947	8,216	30,001	12,521
Other income, net	(1,256)	(1,291)	(549)	(2,022)
Income before income taxes	25,818	49,519	132,361	144,497
Income tax expense	9,283	12,927	28,171	43,234
Net income	$ 16,535	$ 36,592	$ 104,190	$ 101,263
Net income per share - basic	$ 0.43	$ 0.95	$ 2.69	$ 2.61
Net income per share - diluted	$ 0.42	$ 0.93	$ 2.66	$ 2.58
Weighted average common shares outstanding for basic computation	38,643	38,674	38,701	38,775
Dilutive effect of potential common shares	396	612	521	497
Weighted average common shares outstanding for diluted computation	39,039	39,286	39,222	39,272