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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Signficant Accounting Policies - Additional Information (Detail) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) segment | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jan. 01, 2021 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Number of reportable insurance business segments | segment | 2 |  |  |
Advertising expense | $ 181 | $ 188 | $ 204 |
Depreciation and other amortization expense | 40 | 39 | $ 45 |
Goodwill | 263 | 265 |  |
Retained earnings | $ 52,277 | $ 47,993 |  |
Building | Upper Limit |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life | 50 years |  |  |
Machinery and equipment | Upper Limit |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life | 20 years |  |  |
Furniture and fixtures | Upper Limit |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life | 20 years |  |  |
Accounting Standards Update 2018-12 | Cumulative effect, period of adoption, adjustment |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Accumulated other comprehensive income (loss) |  |  |  | $ (18,600)
Retained earnings |  |  |  | $ (300)

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