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Policyholders' account balances (Policyholder Account Balance Rollforward) (Details) - USD ($) $ in Millions | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Policyholder Account Balance [Line Items] |  |  |  |  |
Balance – beginning of period |  | $ 6,748 | $ 6,789 |  |
Policyholder Account Balance, Premium Received |  | 706 | 818 |  |
Policyholder Account Balance, Policy Charge | [1] | (88) | (105) |  |
Policyholder Account Balance, Surrender and Withdrawal |  | (258) | (327) |  |
Policyholder Account Balance, Benefit Payment | [2] | (206) | (215) |  |
Policyholder Account Balance, Interest Expense |  | 130 | 108 |  |
Policyholder Account Balance, Increase (Decrease) from Other Change |  | 169 | (200) |  |
Balance – end of period |  | 7,201 | 6,868 |  |
Unearned Revenue Liability |  | 760 | 712 | $ 711 | $ 673
Policyholder Account Balance, Other Reconciling Items | [3] | 578 | 556 |  |
Policyholder Account Balance, Ending Balance |  | 8,539 | 8,136 |  |
Universal Life |  |  |  |  |
Policyholder Account Balance [Line Items] |  |  |  |  |
Balance – beginning of period |  | 1,809 | 1,876 |  |
Policyholder Account Balance, Premium Received |  | 158 | 204 |  |
Policyholder Account Balance, Policy Charge | [1] | (81) | (98) |  |
Policyholder Account Balance, Surrender and Withdrawal |  | (91) | (95) |  |
Policyholder Account Balance, Benefit Payment | [2] | (24) | (59) |  |
Policyholder Account Balance, Interest Expense |  | 35 | 38 |  |
Policyholder Account Balance, Increase (Decrease) from Other Change |  | 77 | 3 |  |
Balance – end of period |  | 1,883 | 1,869 |  |
Policyholder Account Balance, Ending Balance |  | $ 1,883 | $ 1,869 |  |
Policyholder Account Balance, Weighted Average Crediting Rate | [4] | 2.60% | 2.70% |  |
Policyholder Account Balance, Net Amount at Risk | [5] | $ 11,474 | $ 12,648 |  |
Policyholder Account Balance, Cash Surrender Value |  | 1,747 | 1,699 |  |
Annuities [Member] |  |  |  |  |
Policyholder Account Balance [Line Items] |  |  |  |  |
Balance – beginning of period | [6] | 2,585 | 2,411 |  |
Policyholder Account Balance, Premium Received | [6] | 232 | 294 |  |
Policyholder Account Balance, Policy Charge | [1],[6] | 0 | 0 |  |
Policyholder Account Balance, Surrender and Withdrawal | [6] | (24) | (30) |  |
Policyholder Account Balance, Benefit Payment | [2],[6] | (116) | (116) |  |
Policyholder Account Balance, Interest Expense | [6] | 36 | 29 |  |
Policyholder Account Balance, Increase (Decrease) from Other Change | [6] | 49 | 20 |  |
Balance – end of period | [6] | 2,762 | 2,608 |  |
Policyholder Account Balance, Ending Balance |  | $ 2,762 | $ 2,608 |  |
Policyholder Account Balance, Weighted Average Crediting Rate | [4] | 1.80% | 1.60% |  |
Policyholder Account Balance, Net Amount at Risk | [5] | $ 30 | $ 0 |  |
Policyholder Account Balance, Cash Surrender Value |  | 1,827 | 1,691 |  |
Insurance, Other |  |  |  |  |
Policyholder Account Balance [Line Items] |  |  |  |  |
Balance – beginning of period | [7] | 2,354 | 2,502 |  |
Policyholder Account Balance, Premium Received | [7] | 316 | 320 |  |
Policyholder Account Balance, Policy Charge | [1],[7] | (7) | (7) |  |
Policyholder Account Balance, Surrender and Withdrawal | [7] | (143) | (202) |  |
Policyholder Account Balance, Benefit Payment | [2],[7] | (66) | (40) |  |
Policyholder Account Balance, Interest Expense | [7] | 59 | 41 |  |
Policyholder Account Balance, Increase (Decrease) from Other Change | [7] | 43 | (223) |  |
Balance – end of period | [7] | 2,556 | 2,391 |  |
Policyholder Account Balance, Ending Balance |  | $ 2,556 | $ 2,391 |  |
Policyholder Account Balance, Weighted Average Crediting Rate | [4] | 3.30% | 2.70% |  |
Policyholder Account Balance, Net Amount at Risk | [5] | $ 366 | $ 440 |  |
Policyholder Account Balance, Cash Surrender Value |  | $ 2,264 | $ 2,091 |  |
[1] | Contracts included in the policyholder account balances are generally charged a premium and/or monthly assessments on the basis of the account balance.
[2] | Includes benefit payments upon maturity as well as death benefits.
[3] | Primarily comprises unpaid dividends on certain participating policies.
[4] | Calculated using actual interest credited for the nine months ended September 30, 2025 and 2024, respectively.
[5] | For those guarantees of benefits that are payable in the event of death, the net amount at risk is defined as the current guaranteed minimum death benefit in excess of the current account balance at the balance sheet date.
[6] | Relates to Huatai Life.
[7] | Primarily comprises policyholder account balances related to investment linked products including endowment and investment contracts, none of which bear significant insurance risk.

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- Definition Amount of cash to be paid to policyholder upon termination and surrender of long-duration contract issued by insurance entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7A Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29F + Details
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- Definition Amount of cash outflow to policyholder account balance from benefit payment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7A Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29F Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 13J -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-13J + Details
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- Definition Amount due to policyholder. Includes, but is not limited to, unpaid policy dividend, retrospective refund, and undistributed earnings on participating business. Excludes future policy benefit and claim expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(14)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29F Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7A + Details
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