Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Revenues
Operating Revenues	$ 1,031,546	$ 914,721
Operating Costs and Expenses
Selling, general and administrative	241,962	224,862
Depreciation of property, plant and equipment	20,025	19,475
Amortization of intangible assets	13,944	14,912
Impairment of long-lived assets	745	0
Total Operating Costs and Expenses	1,003,890	874,750
Income from Operations	27,656	39,971
Equity in earnings of affiliates, net	4,661	2,604
Interest income	1,204	715
Interest expense	(14,294)	(11,417)
Non-operating pension and postretirement benefit income, net	31,845	50,505
Gain on marketable equity securities, net	18,022	46,912
Other income, net	3,083	2,876
Income Before Income Taxes	72,177	132,166
Provision for Income Taxes	19,200	35,600
Net Income	52,977	96,566
Net Income Attributable to Noncontrolling Interests	(705)	(942)
Net Income Attributable to Graham Holdings Company Common Stockholders	$ 52,272	$ 95,624
Per Share Information Attributable to Graham Holdings Company Common Stockholders
Basic net income per common share (in USD per share)	$ 10.91	$ 19.50
Basic average number of common shares outstanding (in shares)	4,759	4,871
Diluted net income per common share (in USD per share)	$ 10.88	$ 19.45
Diluted average number of common shares outstanding (in shares)	4,776	4,885
Services [Member]
Operating Revenues
Operating Revenues	$ 586,863	$ 557,569
Operating Costs and Expenses
Cost of services and goods	356,942	324,981
Goods [Member]
Operating Revenues
Operating Revenues	444,683	357,152
Operating Costs and Expenses
Cost of services and goods	$ 370,272	$ 290,520