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REVENUE - Disaggregation of Revenues (Details)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	100.00%	100.00%
Percent of total company revenue	100.00%	100.00%
Operating earnings (losses)
Disaggregation of Revenue [Line Items]
Total company revenue (as a percent)	1.00%	2.00%
Contractors
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	8.00%	8.00%
Commercial
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	6.00%	6.00%
Government Customer
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	15.00%	14.00%
Healthcare Customer
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	6.00%	6.00%
Manufacturing
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	31.00%	31.00%
Retail/Wholesale
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	4.00%	4.00%
Transportation
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	4.00%	4.00%
Utilities
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	3.00%	3.00%
Warehousing
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	3.00%	4.00%
Wholesale
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	9.00%	9.00%
Other
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	11.00%	11.00%
High-Touch Solutions N.A.
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	100.00%	100.00%
Percent of total company revenue	81.00%	79.00%
High-Touch Solutions N.A. | Contractors
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	7.00%	7.00%
High-Touch Solutions N.A. | Commercial
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	5.00%	5.00%
High-Touch Solutions N.A. | Government Customer
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	18.00%	17.00%
High-Touch Solutions N.A. | Healthcare Customer
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	7.00%	8.00%
High-Touch Solutions N.A. | Manufacturing
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	31.00%	31.00%
High-Touch Solutions N.A. | Retail/Wholesale
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	4.00%	4.00%
High-Touch Solutions N.A. | Transportation
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	4.00%	4.00%
High-Touch Solutions N.A. | Utilities
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	3.00%	3.00%
High-Touch Solutions N.A. | Warehousing
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	4.00%	5.00%
High-Touch Solutions N.A. | Wholesale
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	7.00%	7.00%
High-Touch Solutions N.A. | Other
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	10.00%	9.00%
Endless Assortment
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	100.00%	100.00%
Percent of total company revenue	18.00%	19.00%
Endless Assortment | Contractors
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	12.00%	13.00%
Endless Assortment | Commercial
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	12.00%	12.00%
Endless Assortment | Government Customer
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	3.00%	4.00%
Endless Assortment | Healthcare Customer
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	2.00%	2.00%
Endless Assortment | Manufacturing
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	30.00%	30.00%
Endless Assortment | Retail/Wholesale
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	4.00%	4.00%
Endless Assortment | Transportation
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	2.00%	2.00%
Endless Assortment | Utilities
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	2.00%	2.00%
Endless Assortment | Warehousing
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	0.00%	0.00%
Endless Assortment | Wholesale
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	17.00%	15.00%
Endless Assortment | Other
Disaggregation of Revenue [Line Items]
Total net sales (as a percent)	16.00%	16.00%

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- Definition

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