XML 56 R48.htm IDEA: XBRL DOCUMENT
v3.25.2

Long-duration insurance contracts (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2025
Insurance [Abstract] |
Summary of life, annuity and health insurance benefits liabilities | A summary of our long-duration life, annuity and health insurance benefits liabilities disaggregated by our principal product categories follows (in millions).
| June 30, |
| 2025 |  |  | 2024 |
Periodic payment annuity (“Annuities”) | $ | 10,457 |  |  | $ | 10,378 |
Life and health |  | 4,504 |  |  |  | 4,167 |
Other |  | 2,904 |  |  |  | 2,955 |
| $ | 17,865 |  |  | $ | 17,500 |
Summary of changes in discounted present values of expected future policy benefits and expected future net premiums | Net premiums represent the portion of expected gross premiums that are required to provide for future policy benefits and variable expenses.
| Annuities |  |  | Life and health |
| 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Expected future policy benefits: |  |  |  |  |  |  |  |  |  |  |
Balance at the beginning of the year | $ | 10,276 |  |  | $ | 11,212 |  |  | $ | 43,784 |  |  | $ | 52,665 |
Balance at the beginning of the year - original discount rates |  | 11,757 |  |  |  | 11,681 |  |  |  | 55,170 |  |  |  | 65,871 |
Effect of cash flow assumption changes |  | — |  |  |  | — |  |  |  | (98 | ) |  |  | (324 | )
Effect of actual versus expected experience |  | (20 | ) |  |  | 4 |  |  |  | 246 |  |  |  | (12,836 | )
Change in benefits, net |  | (240 | ) |  |  | (235 | ) |  |  | (887 | ) |  |  | (943 | )
Interest accrual |  | 277 |  |  |  | 273 |  |  |  | 646 |  |  |  | 575 |
Foreign currency effect |  | 136 |  |  |  | 15 |  |  |  | 1,489 |  |  |  | (459 | )
Balance at June 30 - original discount rates |  | 11,910 |  |  |  | 11,738 |  |  |  | 56,566 |  |  |  | 51,884 |
Effect of changes in discount rate assumptions |  | (1,453 | ) |  |  | (1,360 | ) |  |  | (12,232 | ) |  |  | (12,739 | )
Balance at June 30 | $ | 10,457 |  |  | $ | 10,378 |  |  | $ | 44,334 |  |  | $ | 39,145 |
Expected future net premiums: |  |  |  |  |  |  |  |  |  |  |
Balance at the beginning of the year |  |  |  |  |  |  | $ | 39,294 |  |  | $ | 46,916 |
Balance at the beginning of the year - original discount rates |  |  |  |  |  |  |  | 49,500 |  |  |  | 58,731 |
Effect of cash flow assumption changes |  |  |  |  |  |  |  | (66 | ) |  |  | (326 | )
Effect of actual versus expected experience |  |  |  |  |  |  |  | 204 |  |  |  | (11,225 | )
Change in premiums, net |  |  |  |  |  |  |  | (884 | ) |  |  | (876 | )
Interest accrual |  |  |  |  |  |  |  | 579 |  |  |  | 507 |
Foreign currency effect |  |  |  |  |  |  |  | 1,395 |  |  |  | (436 | )
Balance at June 30 - original discount rates |  |  |  |  |  |  |  | 50,728 |  |  |  | 46,375 |
Effect of changes in discount rate assumptions |  |  |  |  |  |  |  | (10,898 | ) |  |  | (11,397 | )
Balance at June 30 |  |  |  |  |  |  | $ | 39,830 |  |  | $ | 34,978 |
Liabilities for future policy benefits: |  |  |  |  |  |  |  |  |  |  |
Balance at June 30 | $ | 10,457 |  |  | $ | 10,378 |  |  | $ | 4,504 |  |  | $ | 4,167 |
Reinsurance recoverables |  | — |  |  |  | — |  |  |  | (51 | ) |  |  | (49 | )
Balance at June 30, net of reinsurance recoverables | $ | 10,457 |  |  | $ | 10,378 |  |  | $ | 4,453 |  |  | $ | 4,118 |
Summary of Other Information Relating to Long-Duration Insurance Liabilities | Other information relating to our long-duration insurance liabilities follows (dollars in millions).
| Annuities |  |  | Life and health |
| June 30, |  |  | June 30, |
| 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Undiscounted expected future gross premiums | $ | — |  |  | $ | — |  |  | $ | 103,580 |  |  | $ | 94,942 |
Discounted expected future gross premiums |  | — |  |  |  | — |  |  |  | 60,951 |  |  |  | 55,787 |
Undiscounted expected future benefits |  | 30,670 |  |  |  | 30,867 |  |  |  | 94,173 |  |  |  | 86,253 |
Weighted average discount rate |  | 5.7 | % |  |  | 5.7 | % |  |  | 5.2 | % |  |  | 5.2 | %
Weighted average accretion rate |  | 4.8 | % |  |  | 4.8 | % |  |  | 2.7 | % |  |  | 2.7 | %
Weighted average duration | 16 years |  |  | 16 years |  |  | 13 years |  |  | 13 years |
Summary of gross premiums earned and net interest expense | Gross premiums earned and interest expense before reinsurance ceded for the first six months of 2025 and 2024 were as follows (in millions).
| Gross premiums |  |  | Interest expense |
| 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Annuities | $ | — |  |  | $ | — |  |  | $ | 277 |  |  | $ | 273 |
Life and health |  | 1,961 |  |  |  | 1,870 |  |  |  | 67 |  |  |  | 68 |

X
- Definition Summary of gross premiums earned and interest expense. + References No definition available. + Details
Name: | brka_SummaryOfGrossPremiumsEarnedAndInterestExpenseTableTextBlock
Namespace Prefix: | brka_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary Of Life, Annuity And Health Insurance Benefits Liabilities. + References No definition available. + Details
Name: | brka_SummaryOfLifeAnnuityAndHealthInsuranceBenefitsLiabilitiesTableTextBlock
Namespace Prefix: | brka_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary of other information relating to long-duration insurance liabilities. + References No definition available. + Details
Name: | brka_SummaryOfOtherInformationRelatingToLongDurationInsuranceLiabilitiesTableTextBlock
Namespace Prefix: | brka_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InsuranceAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of beginning balance to ending balance for liability for future policy benefit, with separate presentation of expected future net premium and expected future benefit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480016/944-40-65-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29E Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-6 + Details
Name: | us-gaap_LiabilityForFuturePolicyBenefitActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration