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FAIR VALUE MEASUREMENTS - Fair Value Hierarchy Levels of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets: |  |
Available for sale, fixed maturity securities | $ 73,290 | $ 75,741
Equity securities | 1,088 | 1,091
Other investments | 1,304 | 1,532
Cash and cash equivalents | 4,306 | 3,943
Asset derivatives | $ 337 | $ 617
Asset derivatives ext list | Other | Other
Total assets | $ 80,325 | $ 82,924
Liabilities: |  |
Liability derivatives | 1,430 | 1,698
Total liabilities | 1,430 | 1,698
Foreign currency swaps |  |
Assets: |  |
Asset derivatives | 86 | 128
Liabilities: |  |
Liability derivatives | 507 | 390
Foreign currency forwards |  |
Assets: |  |
Asset derivatives | 238 | 400
Liabilities: |  |
Liability derivatives | 504 | 725
Foreign currency options |  |
Assets: |  |
Asset derivatives | 2 | 82
Interest rate swaps |  |
Assets: |  |
Asset derivatives | 11 | 7
Liabilities: |  |
Liability derivatives | 419 | 583
Government and agencies |  |
Assets: |  |
Available for sale, fixed maturity securities | 22,600 | 25,114
Municipalities |  |
Assets: |  |
Available for sale, fixed maturity securities | 2,298 | 2,320
Mortgage- and asset-backed securities |  |
Assets: |  |
Available for sale, fixed maturity securities | 3,086 | 2,146
Public utilities |  |
Assets: |  |
Available for sale, fixed maturity securities | 7,592 | 7,666
Sovereign and supranational |  |
Assets: |  |
Available for sale, fixed maturity securities | 537 | 834
Banks/financial institutions |  |
Assets: |  |
Available for sale, fixed maturity securities | 8,835 | 9,299
Other corporate |  |
Assets: |  |
Available for sale, fixed maturity securities | 28,342 | 28,362
Level 1 |  |
Assets: |  |
Available for sale, fixed maturity securities | 21,700 | 24,158
Equity securities | 840 | 822
Other investments | 1,304 | 1,532
Cash and cash equivalents | 4,306 | 3,943
Asset derivatives | 0 | 0
Total assets | 28,150 | 30,455
Liabilities: |  |
Total liabilities | 0 | 0
Level 1 | Foreign currency swaps |  |
Assets: |  |
Asset derivatives | 0 | 0
Liabilities: |  |
Liability derivatives | 0 | 0
Level 1 | Foreign currency forwards |  |
Assets: |  |
Asset derivatives | 0 | 0
Liabilities: |  |
Liability derivatives | 0 | 0
Level 1 | Foreign currency options |  |
Assets: |  |
Asset derivatives | 0 | 0
Level 1 | Interest rate swaps |  |
Assets: |  |
Asset derivatives | 0 | 0
Liabilities: |  |
Liability derivatives | 0 | 0
Level 1 | Government and agencies |  |
Assets: |  |
Available for sale, fixed maturity securities | 21,700 | 24,158
Level 1 | Municipalities |  |
Assets: |  |
Available for sale, fixed maturity securities | 0 | 0
Level 1 | Mortgage- and asset-backed securities |  |
Assets: |  |
Available for sale, fixed maturity securities | 0 | 0
Level 1 | Public utilities |  |
Assets: |  |
Available for sale, fixed maturity securities | 0 | 0
Level 1 | Sovereign and supranational |  |
Assets: |  |
Available for sale, fixed maturity securities | 0 | 0
Level 1 | Banks/financial institutions |  |
Assets: |  |
Available for sale, fixed maturity securities | 0 | 0
Level 1 | Other corporate |  |
Assets: |  |
Available for sale, fixed maturity securities | 0 | 0
Level 2 |  |
Assets: |  |
Available for sale, fixed maturity securities | 49,809 | 49,805
Equity securities | 0 | 60
Other investments | 0 | 0
Cash and cash equivalents | 0 | 0
Asset derivatives | 337 | 617
Total assets | 50,146 | 50,482
Liabilities: |  |
Total liabilities | 1,430 | 1,698
Level 2 | Foreign currency swaps |  |
Assets: |  |
Asset derivatives | 86 | 128
Liabilities: |  |
Liability derivatives | 507 | 390
Level 2 | Foreign currency forwards |  |
Assets: |  |
Asset derivatives | 238 | 400
Liabilities: |  |
Liability derivatives | 504 | 725
Level 2 | Foreign currency options |  |
Assets: |  |
Asset derivatives | 2 | 82
Level 2 | Interest rate swaps |  |
Assets: |  |
Asset derivatives | 11 | 7
Liabilities: |  |
Liability derivatives | 419 | 583
Level 2 | Government and agencies |  |
Assets: |  |
Available for sale, fixed maturity securities | 900 | 956
Level 2 | Municipalities |  |
Assets: |  |
Available for sale, fixed maturity securities | 2,298 | 2,320
Level 2 | Mortgage- and asset-backed securities |  |
Assets: |  |
Available for sale, fixed maturity securities | 2,314 | 1,803
Level 2 | Public utilities |  |
Assets: |  |
Available for sale, fixed maturity securities | 7,339 | 7,169
Level 2 | Sovereign and supranational |  |
Assets: |  |
Available for sale, fixed maturity securities | 507 | 797
Level 2 | Banks/financial institutions |  |
Assets: |  |
Available for sale, fixed maturity securities | 8,757 | 9,140
Level 2 | Other corporate |  |
Assets: |  |
Available for sale, fixed maturity securities | 27,694 | 27,620
Level 3 |  |
Assets: |  |
Available for sale, fixed maturity securities | 1,781 | 1,778
Equity securities | 248 | 209
Other investments | 0 | 0
Cash and cash equivalents | 0 | 0
Asset derivatives | 0 | 0
Total assets | 2,029 | 1,987
Liabilities: |  |
Total liabilities | 0 | 0
Level 3 | Foreign currency swaps |  |
Assets: |  |
Asset derivatives | 0 | 0
Liabilities: |  |
Liability derivatives | 0 | 0
Level 3 | Foreign currency forwards |  |
Assets: |  |
Asset derivatives | 0 | 0
Liabilities: |  |
Liability derivatives | 0 | 0
Level 3 | Foreign currency options |  |
Assets: |  |
Asset derivatives | 0 | 0
Level 3 | Interest rate swaps |  |
Assets: |  |
Asset derivatives | 0 | 0
Liabilities: |  |
Liability derivatives | 0 | 0
Level 3 | Government and agencies |  |
Assets: |  |
Available for sale, fixed maturity securities | 0 | 0
Level 3 | Municipalities |  |
Assets: |  |
Available for sale, fixed maturity securities | 0 | 0
Level 3 | Mortgage- and asset-backed securities |  |
Assets: |  |
Available for sale, fixed maturity securities | 772 | 343
Level 3 | Public utilities |  |
Assets: |  |
Available for sale, fixed maturity securities | 253 | 497
Level 3 | Sovereign and supranational |  |
Assets: |  |
Available for sale, fixed maturity securities | 30 | 37
Level 3 | Banks/financial institutions |  |
Assets: |  |
Available for sale, fixed maturity securities | 78 | 159
Level 3 | Other corporate |  |
Assets: |  |
Available for sale, fixed maturity securities | $ 648 | $ 742

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