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Fair Value of Financial Instruments - Narrative (Detail) $ in Millions | Dec. 31, 2023 USD ($) $ / Contract | Dec. 31, 2022 USD ($)
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments in unconsolidated affiliates | $ 3,334 | $ 2,642
Title |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments in unconsolidated affiliates | $ 263 | $ 187
Credit Linked Note | Income Approach |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative, strike price | $ / Contract | 0 |

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