Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 872,483	$ 893,357	$ 2,850,812	$ 2,912,278
Technology Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	856,762	879,037	2,804,553	2,871,391
Master Agency and Professional Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	15,721	14,320	46,259	40,887
Worldwide Barcode, Networking & Security Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	583,642	596,913	1,967,670	1,953,664
Worldwide Barcode, Networking & Security Segment [Member] | Technology Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	583,642	596,913	1,967,670	1,953,664
Worldwide Barcode, Networking & Security Segment [Member] | Master Agency and Professional Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Worldwide Communications & Services Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	288,841	296,444	883,142	958,614
Worldwide Communications & Services Segment [Member] | Technology Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	273,120	282,124	836,883	917,727
Worldwide Communications & Services Segment [Member] | Master Agency and Professional Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 15,721	$ 14,320	$ 46,259	$ 40,887