Revenue Recognition Revenue Recognition (Details 1)	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
General Industry [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	36.60%	37.20%	36.10%	36.30%
Industrial Machinery [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	14.10%	12.20%	13.20%	13.50%
Food [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	11.10%	12.70%	11.40%	11.10%
Metals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	9.50%	10.20%	9.90%	10.00%
Forest Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	9.20%	9.00%	9.20%	9.20%
Chem/Petrochem [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	6.30%	6.60%	6.90%	6.80%
Cement & Aggregate [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	5.10%	5.00%	5.50%	5.40%
Transportation [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	4.20%	3.50%	4.00%	3.60%
Oil & Gas [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	3.90%	3.60%	3.80%	4.10%
Total
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	100.00%	100.00%	100.00%	100.00%
Service Center Based Distribution Segment [Member] | General Industry [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	33.80%	35.60%	34.50%	34.90%
Service Center Based Distribution Segment [Member] | Industrial Machinery [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	8.70%	6.80%	8.30%	8.20%
Service Center Based Distribution Segment [Member] | Food [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	15.50%	17.30%	15.30%	15.00%
Service Center Based Distribution Segment [Member] | Metals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	11.10%	11.40%	11.10%	11.00%
Service Center Based Distribution Segment [Member] | Forest Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	12.50%	11.70%	12.10%	12.00%
Service Center Based Distribution Segment [Member] | Chem/Petrochem [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	2.70%	2.60%	2.80%	2.70%
Service Center Based Distribution Segment [Member] | Cement & Aggregate [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	7.20%	6.70%	7.50%	7.30%
Service Center Based Distribution Segment [Member] | Transportation [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	3.50%	3.50%	3.60%	3.60%
Service Center Based Distribution Segment [Member] | Oil & Gas [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	5.00%	4.40%	4.80%	5.30%
Service Center Based Distribution Segment [Member] | Total
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	100.00%	100.00%	100.00%	100.00%
Engineered Solutions Segment [Member] | General Industry [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	41.50%	40.70%	39.10%	39.50%
Engineered Solutions Segment [Member] | Industrial Machinery [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	24.30%	24.30%	23.40%	24.80%
Engineered Solutions Segment [Member] | Food [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	2.90%	2.50%	3.30%	2.60%
Engineered Solutions Segment [Member] | Metals [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	6.50%	7.40%	7.60%	7.70%
Engineered Solutions Segment [Member] | Forest Products [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	3.10%	3.10%	3.20%	3.20%
Engineered Solutions Segment [Member] | Chem/Petrochem [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	13.10%	15.40%	15.30%	15.70%
Engineered Solutions Segment [Member] | Cement & Aggregate [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	1.30%	1.10%	1.40%	1.20%
Engineered Solutions Segment [Member] | Transportation [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	5.40%	3.60%	4.80%	3.60%
Engineered Solutions Segment [Member] | Oil & Gas [Domain]
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	1.90%	1.90%	1.90%	1.70%
Engineered Solutions Segment [Member] | Total
Disaggregation of Revenue [Line Items]
Disaggregated Revenue by Customer Industry, Percent	100.00%	100.00%	100.00%	100.00%