REVENUE (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total net sales	100.00%	100.00%	100.00%
Percent of total company revenue	100.00%	100.00%	100.00%
Percentage of company-wide revenue	1.00%	2.00%	2.00%
Manufacturing
Disaggregation of Revenue [Line Items]
Total net sales	30.00%	30.00%	30.00%
Government
Disaggregation of Revenue [Line Items]
Total net sales	16.00%	15.00%	15.00%
Wholesale
Disaggregation of Revenue [Line Items]
Total net sales	9.00%	9.00%	8.00%
Commercial Services
Disaggregation of Revenue [Line Items]
Total net sales	8.00%	8.00%	8.00%
Contractors
Disaggregation of Revenue [Line Items]
Total net sales	6.00%	6.00%	6.00%
Healthcare
Disaggregation of Revenue [Line Items]
Total net sales	6.00%	6.00%	7.00%
Retail
Disaggregation of Revenue [Line Items]
Total net sales	4.00%	4.00%	4.00%
Transportation
Disaggregation of Revenue [Line Items]
Total net sales	4.00%	4.00%	4.00%
Utilities
Disaggregation of Revenue [Line Items]
Total net sales	3.00%	3.00%	3.00%
Warehousing
Disaggregation of Revenue [Line Items]
Total net sales	3.00%	4.00%	4.00%
Other
Disaggregation of Revenue [Line Items]
Total net sales	11.00%	11.00%	11.00%
High-Touch Solutions N.A.
Disaggregation of Revenue [Line Items]
Total net sales	100.00%	100.00%	100.00%
Percent of total company revenue	81.00%	80.00%	78.00%
High-Touch Solutions N.A. | Manufacturing
Disaggregation of Revenue [Line Items]
Total net sales	30.00%	31.00%	29.00%
High-Touch Solutions N.A. | Government
Disaggregation of Revenue [Line Items]
Total net sales	19.00%	18.00%	19.00%
High-Touch Solutions N.A. | Wholesale
Disaggregation of Revenue [Line Items]
Total net sales	7.00%	7.00%	7.00%
High-Touch Solutions N.A. | Commercial Services
Disaggregation of Revenue [Line Items]
Total net sales	7.00%	7.00%	7.00%
High-Touch Solutions N.A. | Contractors
Disaggregation of Revenue [Line Items]
Total net sales	5.00%	5.00%	5.00%
High-Touch Solutions N.A. | Healthcare
Disaggregation of Revenue [Line Items]
Total net sales	7.00%	7.00%	8.00%
High-Touch Solutions N.A. | Retail
Disaggregation of Revenue [Line Items]
Total net sales	4.00%	4.00%	4.00%
High-Touch Solutions N.A. | Transportation
Disaggregation of Revenue [Line Items]
Total net sales	4.00%	4.00%	4.00%
High-Touch Solutions N.A. | Utilities
Disaggregation of Revenue [Line Items]
Total net sales	3.00%	3.00%	3.00%
High-Touch Solutions N.A. | Warehousing
Disaggregation of Revenue [Line Items]
Total net sales	4.00%	5.00%	5.00%
High-Touch Solutions N.A. | Other
Disaggregation of Revenue [Line Items]
Total net sales	10.00%	9.00%	9.00%
Endless Assortment
Disaggregation of Revenue [Line Items]
Total net sales	100.00%	100.00%	100.00%
Percent of total company revenue	18.00%	18.00%	20.00%
Endless Assortment | Manufacturing
Disaggregation of Revenue [Line Items]
Total net sales	30.00%	30.00%	30.00%
Endless Assortment | Government
Disaggregation of Revenue [Line Items]
Total net sales	3.00%	3.00%	3.00%
Endless Assortment | Wholesale
Disaggregation of Revenue [Line Items]
Total net sales	16.00%	16.00%	14.00%
Endless Assortment | Commercial Services
Disaggregation of Revenue [Line Items]
Total net sales	12.00%	13.00%	13.00%
Endless Assortment | Contractors
Disaggregation of Revenue [Line Items]
Total net sales	12.00%	12.00%	13.00%
Endless Assortment | Healthcare
Disaggregation of Revenue [Line Items]
Total net sales	2.00%	2.00%	2.00%
Endless Assortment | Retail
Disaggregation of Revenue [Line Items]
Total net sales	4.00%	4.00%	5.00%
Endless Assortment | Transportation
Disaggregation of Revenue [Line Items]
Total net sales	2.00%	2.00%	2.00%
Endless Assortment | Utilities
Disaggregation of Revenue [Line Items]
Total net sales	2.00%	2.00%	2.00%
Endless Assortment | Warehousing
Disaggregation of Revenue [Line Items]
Total net sales	0.00%	0.00%	0.00%
Endless Assortment | Other
Disaggregation of Revenue [Line Items]
Total net sales	17.00%	16.00%	16.00%