Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 70,434	$ 353,327	$ 299,968
Foreign currency translation adjustments:
Total foreign currency translation adjustments	(48,340)	(16,052)	31,642
Pension and other postretirement plans:
Actuarial (loss) gain	(727,097)	519,595	365,164
Prior service cost	0	(2)	(69)
Amortization of net actuarial (gain) loss included in net income	(70,833)	(5,486)	1,219
Amortization of net prior service cost included in net income	2,864	3,170	2,680
Settlement included in net income	0	(120)	0
Total pension and other postretirement plans	(795,066)	517,157	368,994
Cash flow hedges gain (loss)	4,765	349	(1,282)
Other Comprehensive (Loss) Income, Before Tax	(838,641)	501,454	399,354
Income tax benefit (expense) related to items of other comprehensive (loss) income	203,404	(133,380)	(99,335)
Other Comprehensive (Loss) Income, Net of Tax	(635,237)	368,074	300,019
Comprehensive (Loss) Income	(564,803)	721,401	599,987
Comprehensive (income) loss attributable to noncontrolling interests	(3,355)	(1,252)	397
Total Comprehensive (Loss) Income Attributable to Graham Holdings Company	$ (568,158)	$ 720,149	$ 600,384