Revenue Recognition Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 1,132,035	$ 980,662	$ 3,254,720	$ 2,749,217
UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	992,761	856,248	2,843,447	2,377,223
CANADA
Disaggregation of Revenue [Line Items]
Net sales	80,133	70,493	234,605	211,322
Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	59,141	53,921	176,668	160,672
Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	761,599	658,998	2,184,979	1,847,087
Service Center Based Distribution Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	628,816	541,622	1,795,148	1,495,198
Service Center Based Distribution Segment [Member] | CANADA
Disaggregation of Revenue [Line Items]
Net sales	80,133	70,493	234,605	211,322
Service Center Based Distribution Segment [Member] | Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	52,650	46,883	155,226	140,567
Engineered Solutions Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	370,436	321,664	1,069,741	902,130
Engineered Solutions Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	363,945	314,626	1,048,299	882,025
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	$ 6,491	$ 7,038	$ 21,442	$ 20,105