Investments in equity securities (Tables)

12 Months Ended

Dec. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Schedule of investments in equity securities

Investments in equity securities are summarized as follows (in millions).

	Cost Basis		Net Unrealized Gains		Fair Value
December 31, 2024
Banks, insurance and finance	$	15,707	$	75,936	$	91,643
Consumer products		12,658		92,091		104,749
Commercial, industrial and other		47,141		28,055		75,196
	$	75,506	$	196,082	$	271,588
December 31, 2023
Banks, insurance and finance	$	27,136	$	51,176	$	78,312
Consumer products		34,248		166,895		201,143
Commercial, industrial and other		48,032		26,355		74,387
	$	109,416	$	244,426	$	353,842