Investments (Schedule Of Components Of Restricted Assets) (Detail) - Asset Pledged as Collateral without Right - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Investments [Line Items]
Trust funds	$ 8,404	$ 8,482
Deposits with U.S. regulatory authorities	2,482	2,544
Deposits with non-U.S. regulatory authorities	4,160	3,584
Assets pledged under repurchase agreements	3,289	2,924
Other pledged assets	203	880
Total restricted assets	$ 18,538	$ 18,414

[Line Items] for This table lists the investments. The line items identify information about all investments.

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Restricted assets that are deposits with non-US regulatory authorities.

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Restricted assets that are deposits with US regulatory authorities.

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- Definition

The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations.

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Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Amount of current assets that are pledged or subject to withdrawal restrictions, classified as other.

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Cash and investments whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

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