Revenue (Tables)

12 Months Ended

Dec. 31, 2020

Revenue

Disaggregation of revenue

	For the Year Ended
	December 31,
	2020		2019		2018
Sales to do-it-yourself customers	$	6,684,183	$	5,612,390	$	5,351,035
Sales to professional service provider customers		4,647,189		4,369,541		4,035,898
Other sales and sales adjustments		273,121		168,054		149,495
Total sales	$	11,604,493	$	10,149,985	$	9,536,428