Investment gains/losses

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Investment gains/losses

Note 8. Investment gains/losses

A summary of investment gains and losses in the first quarter of 2018 and 2017 follows (in millions).

	2018		2017
Equity securities:
Investment gains and losses during 2018 on securities sold in 2018		$   (240)	$	—
Unrealized investment gains and losses on securities held at the end of the period		(7,807)		—
Gross realized gains		—		425
Gross realized losses		—		(125	)
		(8,047)		300
Fixed maturity securities:
Gross realized gains		359		11
Gross realized losses		(138)		(6	)
Other		17		10
		$(7,809)	$	315

We recognize investment gains and losses when we sell or otherwise dispose of such securities. Beginning in 2018, equity security investment gains and losses also include unrealized gains and losses from changes in market prices during the period. See Note 2. Prior to 2018, we recorded the changes in unrealized gains and losses on our investments in equity securities in other comprehensive income.