Other assets - Components of Other Assets (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Other Assets [Abstract] | ||
| Corporate/bank-owned life insurance | $ 5,623 | $ 5,647 |
| Accounts receivable | 5,309 | 4,829 |
| Fails to deliver | 4,080 | 1,197 |
| Tax credit investments | 3,055 | 3,151 |
| Software | 2,733 | 2,707 |
| Prepaid pension assets | 2,605 | 2,361 |
| Assets of consolidated investment management funds | 1,136 | 864 |
| Prepaid expense | 1,066 | 854 |
| Equity method investments | 932 | 953 |
| Other equity investments | 806 | 701 |
| Fair value of hedging derivatives | 572 | 358 |
| Cash collateral receivable on derivative transactions | 543 | 474 |
| Federal Reserve Bank stock | 493 | 484 |
| Seed capital | 166 | 207 |
| Income taxes receivable | 149 | 554 |
| Other | 1,730 | 1,099 |
| Total other assets | 30,998 | 26,440 |
| Federal Home Loan Bank stock, at cost | $ 58 | $ 57 |
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- Definition Assets of Consolidated Investment Management Funds No definition available.
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- Definition Cash Collateral Receivable On Derivative Transactions No definition available.
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- Definition Equity in joint ventures and other investments No definition available.
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- Definition Equity Investments, Other No definition available.
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- Definition Seed Capital investments No definition available.
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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of investment that generates income tax credit and other income tax benefit under tax credit program elected to be accounted for using proportional amortization method. Includes, but is not limited to, investment under program not meeting condition for accounting under proportional amortization method. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated amortization, of finite-lived intangible asset and capitalized cost for software to be sold, leased, or marketed. Excludes goodwill. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition This item represents the amount that could be realized under a life insurance contract or contracts owned by the Entity as of the date of the statement of financial position. Such Entity-owned life insurance policies are commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of other miscellaneous assets. No definition available.
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- Definition Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount receivable from broker-dealers and clearing organizations, including, but not limited to, securities failed-to-deliver, certain deposits for securities borrowed, open transactions, good faith and margin deposits, commissions and floor brokerage receivables. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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