Consolidated Statements Of Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Consolidated Statements Of Income [Abstract]
Net sales		$ 10,534.4	$ 8,767.3	$ 7,265.7
Cost of merchandise sold		(8,387.3)	(7,078.1)	(5,896.2)
Gross Margin		2,147.1	1,689.2	1,369.5
Selling, general and administrative expenses		(1,442.8)	(1,240.5)	(1,098.9)
Depreciation and amortization		(53.4)	(49.8)	(52.8)
Other income, net		2.9	11.5	7.0
Income from Operations		653.8	410.4	224.8
Non-operating expenses		(44.3)	(59.5)	(58.5)
Income before Taxes		609.5	350.9	166.3
Provision for income taxes		(155.8)	(87.9)	(44.2)
Net Income		453.7	263.0	122.1
Net income attributable to noncontrolling interests		(0.8)	(0.6)	(0.3)
Net Income attributable to Graybar Electric Company, Inc.		$ 452.9	$ 262.4	$ 121.8
Net Income attributable to Graybar Electric Company, Inc. per share of Common Stock	[1]	$ 17.05	$ 10.01	$ 4.68

[1] Adjusted for the declaration of a 15% stock dividend in December 2022, shares related to which were issued in February 2023. Prior to the adjustment, the average common shares outstanding were 22.8 million shares and 22.6 million shares for the years ended December 31, 2021 and 2020, respectively.