Revenue Recognition Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 1,060,280	$ 876,874	$ 2,122,685	$ 1,768,555
UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	929,197	756,767	1,850,686	1,520,975
CANADA
Disaggregation of Revenue [Line Items]
Net sales	74,702	66,263	154,472	140,829
Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	56,381	53,844	117,527	106,751
Service Center Based Distribution Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	705,392	587,218	1,423,380	1,188,089
Service Center Based Distribution Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	581,452	474,412	1,166,332	953,576
Service Center Based Distribution Segment [Member] | CANADA
Disaggregation of Revenue [Line Items]
Net sales	74,702	66,263	154,472	140,829
Service Center Based Distribution Segment [Member] | Other Countries [Member]
Disaggregation of Revenue [Line Items]
Net sales	49,238	46,543	102,576	93,684
Engineered Solutions Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	354,888	289,656	699,305	580,466
Engineered Solutions Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	347,745	282,355	684,354	567,399
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	$ 7,143	$ 7,301	$ 14,951	$ 13,067