Investment and derivative contract gains (losses) (Tables)

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Summary of investment and derivative gains (losses)

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

	Third Quarter						First Nine 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	$	(30,354	)	$	(12,902	)	$	33,267		$	(80,496	)
Investment gains (losses) on securities sold during the period		605			(165	)		1,748			(1,085	)
		(29,749	)		(13,067	)		35,015			(81,581	)
Fixed maturity securities:
Gross realized gains		3			6			135			18
Gross realized losses		(29	)		(433	)		(106	)		(509	)
Other		(3	)		(6	)		2,997			(17	)
Investment gains (losses)		(29,778	)		(13,500	)		38,041			(82,089	)
Derivative contract gains (losses)		—			35			—			(273	)
	$	(29,778	)	$	(13,465	)	$	38,041		$	(82,362	)