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Accumulated other comprehensive income
 9 Months Ended
Sep. 30, 2024
Equity [Abstract]  
Accumulated other comprehensive income

Note 21. Accumulated other comprehensive income

A summary of the net changes in after-tax accumulated other comprehensive income attributable to Berkshire Hathaway shareholders for the nine months ending September 30, 2024 and 2023 follows (in millions).

 

 

Unrealized
gains (losses) on investments

 

 

Foreign currency translation

 

 

Long-duration insurance contracts

 

 

Defined benefit pension plans

 

 

Other

 

 

Total

 

First nine months of 2024

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at the beginning of the year

$

190

 

 

$

(5,393

)

 

$

1,353

 

 

$

(97

)

 

$

184

 

 

$

(3,763

)

Other comprehensive income

 

81

 

 

 

78

 

 

 

(10

)

 

 

(44

)

 

 

(34

)

 

 

71

 

Balance at the end of the period

$

271

 

 

$

(5,315

)

 

$

1,343

 

 

$

(141

)

 

$

150

 

 

$

(3,692

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

First nine months of 2023

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at the beginning of the year

$

(187

)

 

$

(6,142

)

 

$

1,541

 

 

$

(552

)

 

$

288

 

 

$

(5,052

)

Other comprehensive income

 

178

 

 

 

(187

)

 

 

786

 

 

 

51

 

 

 

(48

)

 

 

780

 

Balance at the end of the period

$

(9

)

 

$

(6,329

)

 

$

2,327

 

 

$

(501

)

 

$

240

 

 

$

(4,272

)