Investment gains/losses (Tables)

12 Months Ended

Dec. 31, 2017

Investments, Debt and Equity Securities [Abstract]

Investment gains/losses for each of the three years ending December 31, 2017 are summarized below (in millions).


	2017			2016			2015
Fixed maturity securities—
Gross gains	$	103		$	58		$	104
Gross losses		(22	)		(51	)		(171	)
Equity securities—
Gross gains		2,237			7,853			9,526
Gross losses		(919	)		(415	)		(129	)
Other		11			108			43

	$	1,410		$	7,553		$	9,373

- Definition

Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments.

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