Condensed Statements of Consolidated Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net sales	$ 840,038	$ 667,187	$ 1,704,553	$ 1,347,888
Cost of sales	597,178	478,827	1,209,840	967,104
Gross profit	242,860	188,360	494,713	380,784
Selling, distribution and administrative expense, including depreciation	181,895	141,645	367,409	282,232
Operating income	60,965	46,715	127,304	98,552
Interest expense, net	9,578	2,139	20,054	4,305
Other expense (income), net	946	(20)	707	(731)
Income before income taxes	50,441	44,596	106,543	94,978
Income tax expense	11,724	13,646	18,888	30,307
Net income	$ 38,717	$ 30,950	$ 87,655	$ 64,671
Net income per share - basic	$ 1.00	$ 0.80	$ 2.26	$ 1.67
Net income per share - diluted	0.99	0.79	2.23	1.65
Cash dividends per common share	$ 0.30	$ 0.29	$ 0.60	$ 0.58
Weighted average common shares outstanding for basic computation	38,743	38,716	38,729	38,824
Dilutive effect of potential common shares	504	490	587	446
Weighted average common shares outstanding for diluted computation	39,247	39,206	39,316	39,270