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v3.25.2

INVESTMENTS - Additional Information (Detail) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) investment | Jun. 30, 2024 USD ($) investment | Mar. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Held to maturity securities transferred to available for sale securities, number of investments | investment |  |  | 0 | 0 |  |  |  |
Real estate owned impairments | $ 6 | $ 0 | $ 6 | $ 0 |  |  |  |
Real estate owned, fair value | 12 |  | 12 |  |  |  |  |
Equity securities, FV-NI, unrealized gain (loss) | 101 | 15 | 47 | 70 |  |  |  |
Transitional real estate loan commitments | 175 |  | 175 |  |  |  |  |
Middle market loan commitments | 646 |  | 646 |  |  |  |  |
Other Loans Commitments | 1 |  | 1 |  |  |  |  |
Nonaccrual loans, interest income | 0 | 0 | 1 | 0 |  |  |  |
Financing Receivable, Modified, Commitment to Lend | 12 |  | 12 |  |  | $ 14 |  |
Amortized Cost | 17,439 |  | 17,439 |  |  | 15,971 |  |
Credit allowance | 384 |  | 384 |  |  | 355 |  |
Real estate owned, accumulated depreciation | 28 |  | 28 |  |  | 14 |  |
Limited partnerships investment commitments | $ 2,400 |  | $ 2,400 |  |  | 2,800 |  |
Percentage that the lending policy requires that the fair value of the securities received as collateral be of the fair value of the loaned securities | 102.00% |  | 102.00% |  |  |  |  |
Percentage that the lending policy requires that the fair value of the unrestricted cash received as collateral be of the fair value of the loaned securities | 100.00% |  | 100.00% |  |  |  |  |
Securities Lending, Securities Received as Collateral | $ 1,500 |  | $ 1,500 |  |  | 3,000 |  |
Repurchase Agreements and Repurchase-to-Maturity Transactions Outstanding | 0 |  | 0 |  |  | 0 |  |
Variable Interest Entity, Not Consolidated |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Limited partnerships investment commitments | 2,100 |  | 2,100 |  |  | 2,100 |  |
Real estate owned |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Depreciation | 8 | 3 | 14 | 4 |  |  |  |
Transitional real estate loans |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Nonaccrual loans, no allowance | 45 |  | 45 |  |  | 140 |  |
Credit allowance | 243 | 123 | 243 | 123 | $ 203 | 199 | $ 114 | $ 112
Transitional real estate loans | Potential Foreclosure or Deed-in-lieu Foreclosure |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Mortgage Loans in Process of Foreclosure, Amount | 136 |  | 136 |  |  |  |  |
Credit allowance | 20 |  | 20 |  |  |  |  |
Middle market loans |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Nonaccrual loans, no allowance | 0 |  | 0 |  |  | 5 |  |
Credit allowance | 127 | $ 98 | 127 | $ 98 | $ 150 | $ 140 | $ 99 | $ 146
Zero-credit-loss expectation | Japan government and agencies |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Amortized Cost | $ 16,600 |  | $ 16,600 |  |  |  |  |
CALIFORNIA | Geographic Concentration Risk | Mortgages |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  | 20.00% |  |  |  |  |
TEXAS | Geographic Concentration Risk | Mortgages |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  | 14.00% |  |  |  |  |
FLORIDA | Geographic Concentration Risk | Mortgages |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  | 10.00% |  |  |  |  |

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