Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Consolidated Statements Of Comprehensive Income [Abstract]
Net Income	$ 453.7	$ 263.0	$ 122.1
Other Comprehensive Income
Foreign currency translation	(9.8)	0.1	2.8
Pension and postretirement benefits liability adjustments (net of tax of $(13.0), $(22.9), and $(0.5), respectively)	37.3	66.1	1.3
Total Other Comprehensive Income	27.5	66.2	4.1
Comprehensive Income	481.2	329.2	126.2
Less: Comprehensive income attributable to noncontrolling interests, net of tax	0.6	0.6	0.5
Comprehensive Income attributable to Graybar Electric Company, Inc.	$ 480.6	$ 328.6	$ 125.7