Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 3,873,111	$ 3,846,260	$ 3,568,186
Technology Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,817,854	3,803,948	3,538,764
Master Agency and Professional Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	55,257	42,312	29,422
Worldwide Barcode, Networking and Security Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,589,837	2,628,988	2,389,256
Worldwide Barcode, Networking and Security Segment [Member] | Technology Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,589,837	2,628,988	2,389,256
Worldwide Barcode, Networking and Security Segment [Member] | Master Agency and Professional Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Worldwide Communications & Services Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,283,274	1,217,272	1,178,930
Worldwide Communications & Services Segment [Member] | Technology Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,228,017	1,174,960	1,149,508
Worldwide Communications & Services Segment [Member] | Master Agency and Professional Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 55,257	$ 42,312	$ 29,422