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Letters Credit Issued Related Variable Rate Demand Notes.

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Outstanding repurchase demand inventory.

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Percentage Of Letter Of Credit.

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Repurchase demand request.

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Repurchased Outstanding Principal.

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Reserve For Unfunded Credit Commitments.

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Stock Received In Initial Public Offering Shares.

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Total Variable Rate Demand Notes.

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Carrying value as of the balance sheet date of the sum of the obligations to contract holders to provide to them an agreed upon rate of return pursuant to the terms of the underlying contract. These contracts represent lending by the contract holders to the entity in return for a guaranteed (primarily fixed) interest rate until maturity, unless called earlier if the contracts provide that option to the contract holders (usually institutions). There is little or no insurance risk for the entity.

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of cash or securities placed with a broker or counterparty as security for a trading or derivatives securities position which was partially obtained with funds provided by the broker dealer.

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Amount of valuation and qualifying accounts and reserves.

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Commitments, Contingent Liabilities and Guarantees - Additional Information (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Sep. 30, 2019	Jun. 30, 2018	Sep. 30, 2014	Sep. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Dec. 31, 2008
Loss Contingencies
Margin account balance held by the brokerage clearing agent	$ 23		$ 20
Visa
Loss Contingencies
Fair value of liability	198		214
Visa IPO, shares of Visa's Class B common stock received												10.1
Visa Class B shares carryover basis												$ 0
Escrow deposit			250	$ 300	$ 600	$ 450	$ 150	$ 1,565	$ 400	$ 800	$ 500	$ 3,000
Residential mortgage loans
Loss Contingencies
Fair value of liability	10
Repurchased outstanding principal	14	$ 10
Repurchase demand request	23	$ 10
Outstanding repurchase demand inventory	12		18
Secured Debt
Loss Contingencies
Fully and unconditionally guaranteed certain long-term borrowing obligations issued by wholly-owned issuing trust entities	62		62
Standby Letters of Credit
Loss Contingencies
Reserve for unfunded commitments	$ 25		$ 24
Standby letters of credit as a percentage of total letters of credit	99.00%		99.00%
Standby Letters of Credit \| Secured Debt
Loss Contingencies
Standby letters of credit as a percentage of total letters of credit	68.00%		71.00%
Variable Rate Demand Note
Loss Contingencies
Total variable rate demand notes	$ 460		$ 464
Letters of credit issued related to variable rate demand notes	112		118
Variable Rate Demand Note \| Trading Securities
Loss Contingencies
Total variable rate demand notes	1		1
Other Liabilities
Loss Contingencies
Reserve for unfunded commitments	177		182
Other Liabilities \| Residential mortgage loans
Loss Contingencies
Outstanding balances on residential mortgage loans sold with representation and warranty provisions	$ 9		$ 9