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REVENUE (Details) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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%
Other businesses |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Percentage Of Company-Wide Revenue | 2.00% | 4.00% | 5.00%
Contractors |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 10.00% | 10.00% | 10.00%
Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 10.00% | 9.00% | 11.00%
Government |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 15.00% | 16.00% | 14.00%
Healthcare |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 6.00% | 7.00% | 6.00%
Manufacturing |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 30.00% | 30.00% | 31.00%
Retail/Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 10.00% | 9.00% | 8.00%
Transportation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 5.00% | 5.00% | 5.00%
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 14.00% | 14.00% | 15.00%
High-Touch Solutions N.A. |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 100.00% | 100.00% | 100.00%
Percent of Total Company Revenue | 78.00% | 78.00% | 79.00%
High-Touch Solutions N.A. | Contractors |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 9.00% | 9.00% | 10.00%
High-Touch Solutions N.A. | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 9.00% | 8.00% | 10.00%
High-Touch Solutions N.A. | Government |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 18.00% | 20.00% | 17.00%
High-Touch Solutions N.A. | Healthcare |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 7.00% | 9.00% | 7.00%
High-Touch Solutions N.A. | Manufacturing |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 30.00% | 29.00% | 31.00%
High-Touch Solutions N.A. | Retail/Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 10.00% | 9.00% | 8.00%
High-Touch Solutions N.A. | Transportation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 5.00% | 5.00% | 6.00%
High-Touch Solutions N.A. | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 12.00% | 11.00% | 11.00%
Endless Assortment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 100.00% | 100.00% | 100.00%
Percent of Total Company Revenue | 20.00% | 18.00% | 16.00%
Endless Assortment | Contractors |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 16.00% | 15.00% | 16.00%
Endless Assortment | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 15.00% | 15.00% | 15.00%
Endless Assortment | Government |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 3.00% | 3.00% | 3.00%
Endless Assortment | Healthcare |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 2.00% | 2.00% | 1.00%
Endless Assortment | Manufacturing |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 29.00% | 29.00% | 31.00%
Endless Assortment | Retail/Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 10.00% | 10.00% | 10.00%
Endless Assortment | Transportation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 3.00% | 3.00% | 3.00%
Endless Assortment | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 22.00% | 23.00% | 21.00%

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