Condensed Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net Income	$ 33,840	$ 39,683	$ 63,791	$ 268,244
Foreign currency translation adjustments:
Translation adjustments arising during the period	(44,260)	(16,033)	(86,926)	(15,352)
Pension and other postretirement plans:
Amortization of net prior service cost included in net income	716	793	2,148	2,377
Amortization of net actuarial gain included in net income	(18,083)	(1,066)	(53,939)	(4,419)
Total pension and other postretirement plans, before tax	(17,367)	(273)	(51,791)	(2,042)
Cash flow hedges gain	2,202	169	4,935	803
Other Comprehensive Loss, Before Tax	(59,425)	(16,137)	(133,782)	(16,591)
Income tax expense related to items of other comprehensive loss	3,970	11	12,213	342
Other Comprehensive Loss, Net of Tax	(55,455)	(16,126)	(121,569)	(16,249)
Comprehensive (Loss) Income	(21,615)	23,557	(57,778)	251,995
Comprehensive income attributable to noncontrolling interests	(1,060)	(97)	(2,872)	(850)
Total Comprehensive (Loss) Income Attributable to Graham Holdings Company	$ (22,675)	$ 23,460	$ (60,650)	$ 251,145