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v3.23.1

INVESTMENTS - Additional Information (Detail) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) investment | Mar. 31, 2022 USD ($) investment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Schedule of Investments [Line Items] |  |  |  |
Held to maturity securities transferred to available for sale securities, number of investments | investment | 0 | 0 |  |
Equity securities, FV-NI, unrealized gain (loss) | $ (5) |  |  |
Transitional real estate loan commitments | 709 |  |  |
Middle market loan program unfunded amount | 21 |  | $ 28 |
Middle market loan commitments | 748 |  |  |
Held to maturity, fixed maturity securities, amortized cost | 18,942 |  | 19,063 |
Loan Commitments, Allowance for Credit Loss | 21 |  |  |
Limited partnerships investment commitments | $ 2,000 |  |  |
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% |  |  |
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% |  |  |
Securities Lending, Securities Received as Collateral | $ 5,900 |  | 6,800 |
Repurchase Agreements and Repurchase-to-Maturity Transactions Outstanding | 0 |  | 0 |
Credit allowance | 223 |  | 192 |
Total Financing Receivable | 13,551 |  | 13,688 |
Transitional real estate loans |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Credit allowance | 65 | $ 52 | 54 | $ 68
Total Financing Receivable | 6,700 |  | $ 6,509 |
Transitional real estate loans | Potential Foreclosure or Deed-in-lieu Foreclosure [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Amortized cost of financing receivable in anticipation of foreclosure | 521 |  |  |
Credit allowance | 10 |  |  |
Total Financing Receivable | 345 |  |  |
Zero-credit-loss expectation | Japan government and agencies |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Held to maturity, fixed maturity securities, amortized cost | $ 18,000 |  |  |
CALIFORNIA | Commercial Mortgage and Transitional Real Estate Loans | Mortgages |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Concentration Risk, Percentage | 20.00% |  |  |
TEXAS | Commercial Mortgage and Transitional Real Estate Loans | Mortgages |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Concentration Risk, Percentage | 12.00% |  |  |
FLORIDA | Commercial Mortgage and Transitional Real Estate Loans | Mortgages |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Concentration Risk, Percentage | 10.00% |  |  |

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