REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of revenue
Net sales	$ 828,509	$ 704,161	$ 1,616,853	$ 1,341,053
Notebooks/Mobility
Disaggregation of revenue
Net sales	307,794	254,374	616,417	487,974
Desktops
Disaggregation of revenue
Net sales	89,648	68,050	176,059	127,410
Software
Disaggregation of revenue
Net sales	71,647	71,122	132,834	127,998
Servers/Storage
Disaggregation of revenue
Net sales	51,153	55,827	98,318	100,203
Net/Com Products
Disaggregation of revenue
Net sales	55,314	50,262	108,159	98,853
Displays and Sound
Disaggregation of revenue
Net sales	87,908	67,911	171,234	125,083
Accessories
Disaggregation of revenue
Net sales	109,067	80,900	202,247	161,444
Other Hardware/Services
Disaggregation of revenue
Net sales	55,978	55,715	111,585	112,088
Business Solutions
Disaggregation of revenue
Net sales	328,351	267,258	648,794	513,592
Business Solutions | Notebooks/Mobility
Disaggregation of revenue
Net sales	123,176	97,401	253,609	191,836
Business Solutions | Desktops
Disaggregation of revenue
Net sales	23,749	20,607	47,308	41,766
Business Solutions | Software
Disaggregation of revenue
Net sales	39,567	33,102	74,475	60,264
Business Solutions | Servers/Storage
Disaggregation of revenue
Net sales	29,698	21,086	51,862	41,659
Business Solutions | Net/Com Products
Disaggregation of revenue
Net sales	24,430	22,360	47,057	40,764
Business Solutions | Displays and Sound
Disaggregation of revenue
Net sales	30,969	25,825	63,793	45,599
Business Solutions | Accessories
Disaggregation of revenue
Net sales	35,656	27,480	67,897	53,327
Business Solutions | Other Hardware/Services
Disaggregation of revenue
Net sales	21,106	19,397	42,793	38,377
Enterprise Solutions
Disaggregation of revenue
Net sales	348,954	307,161	684,351	572,446
Enterprise Solutions | Notebooks/Mobility
Disaggregation of revenue
Net sales	117,407	94,472	238,747	176,663
Enterprise Solutions | Desktops
Disaggregation of revenue
Net sales	52,632	38,916	97,496	69,267
Enterprise Solutions | Software
Disaggregation of revenue
Net sales	21,572	26,162	42,582	48,667
Enterprise Solutions | Servers/Storage
Disaggregation of revenue
Net sales	11,857	27,106	27,228	44,262
Enterprise Solutions | Net/Com Products
Disaggregation of revenue
Net sales	24,244	20,691	46,435	40,517
Enterprise Solutions | Displays and Sound
Disaggregation of revenue
Net sales	37,732	29,343	74,811	52,748
Enterprise Solutions | Accessories
Disaggregation of revenue
Net sales	57,728	44,311	105,735	88,187
Enterprise Solutions | Other Hardware/Services
Disaggregation of revenue
Net sales	25,782	26,160	51,317	52,135
Public Sector Solutions
Disaggregation of revenue
Net sales	151,204	129,742	283,708	255,015
Public Sector Solutions | Notebooks/Mobility
Disaggregation of revenue
Net sales	67,211	62,501	124,061	119,475
Public Sector Solutions | Desktops
Disaggregation of revenue
Net sales	13,267	8,527	31,255	16,377
Public Sector Solutions | Software
Disaggregation of revenue
Net sales	10,508	11,858	15,777	19,067
Public Sector Solutions | Servers/Storage
Disaggregation of revenue
Net sales	9,598	7,635	19,228	14,282
Public Sector Solutions | Net/Com Products
Disaggregation of revenue
Net sales	6,640	7,211	14,667	17,572
Public Sector Solutions | Displays and Sound
Disaggregation of revenue
Net sales	19,207	12,743	32,630	26,736
Public Sector Solutions | Accessories
Disaggregation of revenue
Net sales	15,683	9,109	28,615	19,930
Public Sector Solutions | Other Hardware/Services
Disaggregation of revenue
Net sales	$ 9,090	$ 10,158	$ 17,475	$ 21,576