Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Segment financial information
Net sales	$ 4,479,406	$ 4,412,794	$ 3,810,676
Operating income for reportable segments	495,823	473,151	357,858
Assets used in the business	2,951,910	2,743,332	2,452,588
Depreciation and amortization of property	23,431	22,266	21,676
Capital expenditures	24,864	26,476	18,124
Service Center Based Distribution Segment [Member]
Segment financial information
Net sales	3,056,555	2,966,842	2,565,604
Operating income for reportable segments	400,182	373,439	301,881
Assets used in the business	1,865,269	1,736,393	1,455,293
Depreciation and amortization of property	17,700	17,932	17,509
Capital expenditures	18,040	15,390	14,486
Engineered Solutions Segment
Segment financial information
Net sales	1,422,851	1,445,952	1,245,072
Operating income for reportable segments	206,844	203,404	156,644
Assets used in the business	1,086,641	1,006,939	997,295
Depreciation and amortization of property	5,731	4,334	4,167
Capital expenditures	6,824	11,086	3,638
Reportable Segments
Segment financial information
Operating income for reportable segments	$ 607,026	$ 576,843	$ 458,525