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Revenue - Percentages of Sales by Product Line (Details) - Product Line - Sales	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Percentage of Sales by Product Line [Line Items]
Percentage of sales	100.00%	100.00%	100.00%
Fasteners
Percentage of Sales by Product Line [Line Items]
Percentage of sales	32.40%	34.00%	33.30%
Tools
Percentage of Sales by Product Line [Line Items]
Percentage of sales	8.50%	8.40%	8.50%
Cutting tools
Percentage of Sales by Product Line [Line Items]
Percentage of sales	5.30%	5.00%	5.00%
Hydraulics & pneumatics
Percentage of Sales by Product Line [Line Items]
Percentage of sales	6.70%	6.50%	6.40%
Material handling
Percentage of Sales by Product Line [Line Items]
Percentage of sales	5.60%	5.70%	5.60%
Janitorial supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	8.40%	8.00%	8.20%
Electrical supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	4.60%	4.40%	4.30%
Welding supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	4.10%	3.90%	3.80%
Safety supplies
Percentage of Sales by Product Line [Line Items]
Percentage of sales	21.20%	20.80%	21.20%
Other
Percentage of Sales by Product Line [Line Items]
Percentage of sales	3.20%	3.30%	3.70%

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- Definition

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