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Investment gains (losses) (Tables)
12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Summary of investment gains (losses)

Investment gains (losses) for each of the three years ending December 31, 2024 are summarized as follows (in millions).

 

 

 

2024

 

 

2023

 

 

2022

 

Investment gains (losses):

 

 

 

 

 

 

 

 

 

Equity securities:

 

 

 

 

 

 

 

 

 

Change in unrealized investment gains (losses) during the year on
   securities held at the end of the year

 

$

49,297

 

 

$

69,144

 

 

$

(63,120

)

Investment gains (losses) during the year on securities sold

 

 

3,523

 

 

 

2,698

 

 

 

(3,927

)

 

 

52,820

 

 

 

71,842

 

 

 

(67,047

)

Fixed maturity securities:

 

 

 

 

 

 

 

 

 

Gross realized gains

 

 

28

 

 

 

139

 

 

 

134

 

Gross realized losses

 

 

(71

)

 

 

(86

)

 

 

(684

)

Other

 

 

22

 

 

 

2,960

 

 

 

(302

)

 

$

52,799

 

 

$

74,855

 

 

$

(67,899

)