Investment and derivative contract gains (losses) (Tables)

6 Months Ended

Jun. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Summary of investment and derivative gains (losses)

Investment and derivative contract gains (losses) in the second quarter and first six months of 2023 and 2022 are summarized as follows (in millions).

	Second Quarter						First Six Months
	2023			2022			2023			2022
Investment gains (losses):
Equity securities:
Change in unrealized investment gains (losses) during the period on    securities held at the end of the period	$	33,046		$	(66,860	)	$	63,763		$	(68,548	)
Investment gains on securities sold during the period		31			32			1,001			34
		33,077			(66,828	)		64,764			(68,514	)
Fixed maturity securities:
Gross realized gains		8			6			132			12
Gross realized losses		(25	)		(27	)		(77	)		(76	)
Other		1			(5	)		3,000			(11	)
Investment gains (losses)		33,061			(66,854	)		67,819			(68,589	)
Derivative contract gains (losses)		—			(65	)		—			(308	)
	$	33,061		$	(66,919	)	$	67,819		$	(68,897	)