Master Trust (Tables)

12 Months Ended

Dec. 31, 2025

EBP025 [Member]

Master Trust [Line Items]

Master Trust [Table Text Block]

The following table presents the net assets of the Master Trust:

	As of December 31, 2025				As of December 31, 2024
	Master Trust		Plan Interest in Master Trust		Master Trust		Plan Interest in Master Trust
Registered Investment Companies (Mutual Funds)	$	621,551,801	$	41,755,118	$	569,373,225	$	37,835,310
Common/Collective Trusts	389,436,814		40,874,521		345,424,320		35,403,793
Berkshire Hathaway Stock Fund	56,895,914		2,660,377		55,306,537		2,344,400
Graham Holdings Company Stock Fund	5,243,851		157,942		4,321,924		122,597
Total net assets	$	1,073,128,380	$	85,447,958	$	974,426,006	$	75,706,100

The following table presents the net appreciation in the fair value of investments and investment income for the Master Trust for the year ended December 31, 2025:

Net appreciation in fair value of investments	$	128,409,130
Interest and dividends	26,076,585
Total investment income	$	154,485,715