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REVENUE
 12 Months Ended
Dec. 31, 2022
REVENUE [Abstract]  
REVENUE REVENUE
The Company's revenue is primarily comprised of MRO product sales and related activities, such as freight and services.

Grainger serves a large number of customers in diverse industries, which are subject to different economic and market-specific factors. The Company's presentation of revenue by segment and industry most reasonably depicts how the nature, amount, timing and uncertainty of the Company's revenue and cash flows are affected by economic and market-specific factors. In addition, the segments have unique underlying risks associated with customer purchasing behaviors. In the High-Touch Solutions N.A. segment, more than two-thirds of revenue is derived from customer contracts whereas in the Endless Assortment segment, a majority of revenue is derived from non-contractual purchases.

The following table presents the Company's percentage of revenue by reportable segment and by major customer industry:
 Twelve Months Ended December 31,
202220212020
 High-Touch Solutions N.A. Endless Assortment 
Total Company (2)
High-Touch Solutions N.A.Endless Assortment
Total Company (2)
High-Touch Solutions N.A.Endless Assortment
Total Company (2)
Contractors9 %15 %10 %9 %16 %10 %9 %15 %10 %
Commercial9 15 10 9 15 10 8 15 9 
Government17 3 14 18 3 15 20 3 16 
Healthcare7 2 6 7 2 6 9 2 7 
Manufacturing31 30 31 30 29 30 29 29 30 
Retail/Wholesale9 15 10 10 10 10 9 10 9 
Transportation6 3 5 5 3 5 5 3 5 
Other(1)
12 17 14 12 22 14 11 23 14 
Total net sales100 % 100 % 100 %100 %100 %100 %100 %100 %100 %
Percent of total company revenue80 %18 %100 %78 %20 %100 %78 %18 %100 %
(1) Other primarily includes revenue from industries and customers that are not material individually, including agriculture, mining, natural resources and resellers not aligned to a major industry segment.
(2) Total Company includes other businesses, which includes the Cromwell business, as well as Grainger's divested businesses in the periods prior to their divestitures. Other businesses account for approximately 2%, 2% and 4% of revenue for the twelve months ended December 31, 2022, 2021 and 2020, respectively.