REVENUE (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue
Sales	$ 3,090,899	$ 2,476,487
DIY customer [Member]
Disaggregation of Revenue
Sales	1,781,166	1,345,482
Professional service provider customer [Member]
Disaggregation of Revenue
Sales	1,239,086	1,070,199
Other sales and sales adjustments [Member]
Disaggregation of Revenue
Sales	$ 70,647	$ 60,806

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details