Revenue Recognition Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 1,077,153	$ 1,060,280	$ 2,172,341	$ 2,122,685
UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	944,652	929,197	1,904,010	1,850,686
CANADA
Disaggregation of Revenue [Line Items]
Net sales	77,170	74,702	152,470	154,472
Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	55,331	56,381	115,861	117,527
Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	729,273	705,392	1,475,806	1,423,380
Service Center Based Distribution Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	602,483	581,452	1,219,745	1,166,332
Service Center Based Distribution Segment [Member] | CANADA
Disaggregation of Revenue [Line Items]
Net sales	77,170	74,702	152,470	154,472
Service Center Based Distribution Segment [Member] | Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	49,620	49,238	103,591	102,576
Engineered Solutions Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	347,880	354,888	696,535	699,305
Engineered Solutions Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	342,169	347,745	684,265	684,354
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	$ 5,711	$ 7,143	$ 12,270	$ 14,951