Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2025

EBP023 [Member]

Fair Value Measurements [Line Items]

Fair Value Measurements [Table Text Block]

Financial assets held by the Master Trust measured at fair value on a recurring basis were as follows:

	As of December 31, 2025				As of December 31, 2024
	Fair Value		Quoted Prices in Active Markets for Identical Items (Level 1)		Fair Value		Quoted Prices in Active Markets for Identical Items (Level 1)
Assets:
Mutual funds	$	621,784,615	$	621,784,615	$	569,520,506	$	569,520,506
Berkshire Hathaway common stock	56,670,947		56,670,947		55,163,111		55,163,111
Graham Holdings Company common stock	5,236,005		5,236,005		4,318,069		4,318,069
Total	$	683,691,567	$	683,691,567	$	629,001,686	$	629,001,686
Common collective trusts (1)	389,436,813		—		345,424,320		—
Total financial assets	$	1,073,128,380	$	683,691,567	$	974,426,006	$	629,001,686

(1)    In accordance with FASB ASC 820, Fair Value Measurement, certain investments that are measured at fair value using net asset value per share (or its equivalent) as a practical expedient have not been classified in the fair value hierarchy. As a result, collective investment trusts are classified as a reconciling item in the fair value hierarchy so that the total investments in the fair value hierarchy is consistent with the Plan investments, at fair value on the Statements of Net Assets Available for Benefits.

The estimated fair value and redemption requirements of the Master Trust’s investment in common collective trust are summarized as follows:

	December 31,
	2025		2024		Unfunded commitments	Redemption frequency	Redemption notice
Target-date strategy funds	$	381,561,598	$	338,587,009	None	Daily	None
Target income strategy fund	7,875,215		6,837,311		None	Daily	None
Total	$	389,436,813	$	345,424,320