Investment gains/losses (Tables)

9 Months Ended

Sep. 30, 2020

Investments Debt And Equity Securities [Abstract]

Summary of investment gains and losses

Investment gains/losses in the third quarter and first nine months of 2020 and 2019 are summarized as follows (in millions).

	Third Quarter						First Nine Months
	2020			2019			2020			2019
Equity securities:
Unrealized investment gains during the period on securities    held at the end of the period	$	30,837		$	10,489		$	16,458		$	39,546
Investment gains/losses on securities sold during the period		1,330			135			(13,901	)		464
		32,167			10,624			2,557			40,010
Fixed maturity securities:
Gross realized gains		12			59			53			71
Gross realized losses		(2	)		(2	)		(22	)		(18	)
Other		(552	)		11			(556	)		16
	$	31,625		$	10,692		$	2,032		$	40,079