Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 845,990	$ 729,873	$ 2,567,652	$ 2,298,111
Hardware, software and cloud (excluding Intelisys)
Disaggregation of Revenue [Line Items]
Revenues	826,756	713,596	2,512,527	2,250,331
Intelisys connectivity and cloud
Disaggregation of Revenue [Line Items]
Revenues	19,234	16,277	55,125	47,780
Specialty Technology Solutions
Disaggregation of Revenue [Line Items]
Revenues	503,072	436,462	1,501,702	1,300,488
Specialty Technology Solutions | Hardware, software and cloud (excluding Intelisys)
Disaggregation of Revenue [Line Items]
Revenues	503,072	436,462	1,501,702	1,300,488
Specialty Technology Solutions | Intelisys connectivity and cloud
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Modern Communications & Cloud
Disaggregation of Revenue [Line Items]
Revenues	342,918	293,411	1,065,950	997,623
Modern Communications & Cloud | Hardware, software and cloud (excluding Intelisys)
Disaggregation of Revenue [Line Items]
Revenues	323,684	277,134	1,010,825	949,843
Modern Communications & Cloud | Intelisys connectivity and cloud
Disaggregation of Revenue [Line Items]
Revenues	$ 19,234	$ 16,277	$ 55,125	$ 47,780