Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 125,339	$ 52,977
Foreign currency translation adjustments:
Translation adjustments arising during the period	(13,284)	8,994
Pension and other postretirement plans:
Amortization of net prior service (credit) cost included in net income	(494)	409
Amortization of net actuarial gain included in net income	(12,987)	(10,766)
Total pension and other postretirement plans, before tax	(13,481)	(10,357)
Cash flow hedges (loss) gain	1,111	(930)
Other Comprehensive Loss, Before Tax	(25,654)	(2,293)
Income tax benefit related to items of other comprehensive loss	3,162	2,878
Other Comprehensive (Loss) Income, Net of Tax	(22,492)	585
Comprehensive Income	102,847	53,562
Comprehensive income attributable to noncontrolling interests	(959)	(705)
Total Comprehensive Income Attributable to Graham Holdings Company	$ 101,888	$ 52,857