Fair Value Measurements (Carrying Values And Fair Values Of Financial Instruments Not Measured At Fair Value) (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Private debt held-for-investment	$ 2,628	$ 2,553
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements	2,731	2,833
Short-term debt	800	1,460
Long-term debt	14,379	13,035
Hybrid debt	419	308
Cost
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Private debt held-for-investment	2,628	2,553
Assets, Fair Value Disclosure, Total	2,628	2,553
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements	2,731	2,833
Short-term debt	800	1,460
Long-term debt	14,379	13,035
Hybrid debt	419	308
Liabilities, Fair Value Disclosure, Total	18,329	17,636
Level 1 \| Portion at Other than Fair Value Measurement
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Private debt held-for-investment	0	0
Assets, Fair Value Disclosure, Total	0	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements	0	0
Short-term debt, Fair Value	0	0
Long-term debt, Fair Value	0	0
Hybrid debt, FV	0	0
Liabilities, Fair Value Disclosure, Total	0	0
Level 2 \| Portion at Other than Fair Value Measurement
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Private debt held-for-investment	0	0
Assets, Fair Value Disclosure, Total	0	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements	2,731	2,833
Short-term debt, Fair Value	797	1,431
Long-term debt, Fair Value	12,979	11,924
Hybrid debt, FV	479	365
Liabilities, Fair Value Disclosure, Total	16,986	16,553
Level 3 \| Portion at Other than Fair Value Measurement
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Private debt held-for-investment	2,680	2,560
Assets, Fair Value Disclosure, Total	2,680	2,560
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements	0	0
Short-term debt, Fair Value	0	0
Long-term debt, Fair Value	0	0
Hybrid debt, FV	0	0
Liabilities, Fair Value Disclosure, Total	0	0
Fair Value, Inputs, Level 1, Level 2, and Level 3 \| Portion at Other than Fair Value Measurement
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Private debt held-for-investment	2,680	2,560
Assets, Fair Value Disclosure, Total	2,680	2,560
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements	2,731	2,833
Short-term debt, Fair Value	797	1,431
Long-term debt, Fair Value	12,979	11,924
Hybrid debt, FV	479	365
Liabilities, Fair Value Disclosure, Total	$ 16,986	$ 16,553

Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Fair value of financial and nonfinancial obligations.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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Carrying value, as of the balance sheet date, of securities sold under agreements to repurchase where the transferor maintains effective control over the assets, accounting for them as secured debt.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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