Revenue Recognition Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 1,146,390	$ 1,132,035	$ 3,318,731	$ 3,254,720
UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	1,017,167	992,761	2,921,177	2,843,447
CANADA
Disaggregation of Revenue [Line Items]
Net sales	73,388	80,133	225,858	234,605
Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	55,835	59,141	171,696	176,668
Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	789,356	761,599	2,265,162	2,184,979
Service Center Based Distribution Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	666,170	628,816	1,885,915	1,795,148
Service Center Based Distribution Segment [Member] | CANADA
Disaggregation of Revenue [Line Items]
Net sales	73,388	80,133	225,858	234,605
Service Center Based Distribution Segment [Member] | Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	49,798	52,650	153,389	155,226
Engineered Solutions Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	357,034	370,436	1,053,569	1,069,741
Engineered Solutions Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	350,997	363,945	1,035,262	1,048,299
Engineered Solutions Segment [Member] | CANADA
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Engineered Solutions Segment [Member] | Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 6,037	$ 6,491	$ 18,307	$ 21,442