Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net Income	$ 52,977	$ 96,566
Foreign currency translation adjustments:
Translation adjustments arising during the period	8,994	(1,738)
Pension and other postretirement plans:
Amortization of net prior service cost included in net income	409	716
Amortization of net actuarial gain included in net income	(10,766)	(17,774)
Total pension and other postretirement plans, before tax	(10,357)	(17,058)
Cash flow hedges (loss) gain	(930)	1,642
Other Comprehensive Income (Loss), Before Tax	(2,293)	(17,154)
Income tax benefit related to items of other comprehensive income (loss)	2,878	4,019
Other Comprehensive Income (Loss), Net of Tax	585	(13,135)
Comprehensive Income	53,562	83,431
Comprehensive income attributable to noncontrolling interests	(705)	(942)
Total Comprehensive Income Attributable to Graham Holdings Company	$ 52,857	$ 82,489