Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Revenues
Operating Revenues	$ 1,152,662	$ 1,031,546
Operating Costs and Expenses
Selling, general and administrative	263,979	241,962
Depreciation of property, plant and equipment	22,527	20,025
Amortization of intangible assets	10,751	13,944
Impairment of long-lived assets	0	745
Total Operating Costs and Expenses	1,117,220	1,003,890
Income from Operations	35,442	27,656
Equity in earnings of affiliates, net	2,331	4,661
Interest income	2,178	1,204
Interest expense	(19,328)	(14,294)
Non-operating pension and postretirement benefit income, net	42,417	31,845
Gain on marketable equity securities, net	104,152	18,022
Other income, net	1,647	3,083
Income Before Income Taxes	168,839	72,177
Provision for Income Taxes	43,500	19,200
Net Income	125,339	52,977
Net Income Attributable to Noncontrolling Interests	(959)	(705)
Net Income Attributable to Graham Holdings Company Common Stockholders	$ 124,380	$ 52,272
Per Share Information Attributable to Graham Holdings Company Common Stockholders
Basic net income per common share (in USD per share)	$ 27.87	$ 10.91
Basic average number of common shares outstanding (in shares)	4,432	4,759
Diluted net income per common share (in USD per share)	$ 27.72	$ 10.88
Diluted average number of common shares outstanding (in shares)	4,457	4,776
Services [Member]
Operating Revenues
Operating Revenues	$ 646,410	$ 586,863
Operating Costs and Expenses
Cost of services and goods	387,743	356,942
Goods [Member]
Operating Revenues
Operating Revenues	506,252	444,683
Operating Costs and Expenses
Cost of services and goods	$ 432,220	$ 370,272