Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating Revenues
Operating Revenues	$ 914,721	$ 712,455
Operating Costs and Expenses
Selling, general and administrative	224,862	175,861
Depreciation of property, plant and equipment	19,475	16,545
Amortization of intangible assets	14,912	13,937
Impairment of long-lived assets	0	1,047
Total Operating Costs and Expenses	874,750	678,611
Income from Operations	39,971	33,844
Equity in earnings of affiliates, net	2,604	13,428
Interest income	715	890
Interest expense	(11,417)	(8,448)
Non-operating pension and postretirement benefit income, net	50,505	28,787
Gain on marketable equity securities, net	46,912	79,214
Other income, net	2,876	6,320
Income Before Income Taxes	132,166	154,035
Provision for Income Taxes	35,600	41,400
Net Income	96,566	112,635
Net Income Attributable to Noncontrolling Interests	(942)	(185)
Net Income Attributable to Graham Holdings Company Common Stockholders	$ 95,624	$ 112,450
Per Share Information Attributable to Graham Holdings Company Common Stockholders
Basic net income per common share (in USD per share)	$ 19.50	$ 22.49
Basic average number of common shares outstanding (in shares)	4,871	4,967
Diluted net income per common share (in USD per share)	$ 19.45	$ 22.44
Diluted average number of common shares outstanding (in shares)	4,885	4,977
Services [Member]
Operating Revenues
Operating Revenues	$ 557,569	$ 483,669
Operating Costs and Expenses
Cost of services and goods	324,981	292,434
Goods [Member]
Operating Revenues
Operating Revenues	357,152	228,786
Operating Costs and Expenses
Cost of services and goods	$ 290,520	$ 178,787