Variable Interest Entities - Firm Sponsored VIEs (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Firm sponsored mortgage and other consumer securitization trusts
Total assets held by securitization VIEs	$ 329,338	$ 306,687
Subordinated securities purchased in connection with CIB's secondary market-making activities	$ 62	$ 56
Retained securitization interests, risk-rated 'A' or better, at fair value	76.00%	74.00%
Commercial & Investment Bank
Firm sponsored mortgage and other consumer securitization trusts
Senior securities purchased in connection with CIB's secondary market-making activities	$ 303	$ 188
VIEs consolidated by the Firm
Firm sponsored mortgage and other consumer securitization trusts
Assets held in consolidated securitization VIEs	657	718
Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Assets held in nonconsolidated securitization VIEs with continuing involvement	221,834	200,277
Interest in securitized assets in nonconsolidated VIEs	12,458	11,474
Trading assets \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	3,325	2,029
Investment securities \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	6,874	7,096
Other financial assets \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	2,259	2,349
Residential mortgage \| Investment-grade
Firm sponsored mortgage and other consumer securitization trusts
Fair value of retained interests	3,300	3,500
Residential mortgage \| Noninvestment-grade
Firm sponsored mortgage and other consumer securitization trusts
Fair value of retained interests	649	525
Residential mortgage \| Prime / Alt-A & option ARMs
Firm sponsored mortgage and other consumer securitization trusts
Total assets held by securitization VIEs	86,950	83,442
Residential mortgage \| Prime / Alt-A & option ARMs \| VIEs consolidated by the Firm
Firm sponsored mortgage and other consumer securitization trusts
Assets held in consolidated securitization VIEs	518	548
Residential mortgage \| Prime / Alt-A & option ARMs \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Assets held in nonconsolidated securitization VIEs with continuing involvement	59,122	58,525
Interest in securitized assets in nonconsolidated VIEs	3,917	4,032
Residential mortgage \| Subprime
Firm sponsored mortgage and other consumer securitization trusts
Total assets held by securitization VIEs	17,222	10,690
Residential mortgage \| Subprime \| VIEs consolidated by the Firm
Firm sponsored mortgage and other consumer securitization trusts
Assets held in consolidated securitization VIEs	0	0
Residential mortgage \| Subprime \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Assets held in nonconsolidated securitization VIEs with continuing involvement	10,402	2,766
Interest in securitized assets in nonconsolidated VIEs	1,679	112
Residential mortgage \| Trading assets \| Prime / Alt-A & option ARMs \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	759	707
Residential mortgage \| Trading assets \| Subprime \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	1,669	100
Residential mortgage \| Investment securities \| Prime / Alt-A & option ARMs \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	1,781	1,799
Residential mortgage \| Investment securities \| Subprime \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	10	12
Residential mortgage \| Other financial assets \| Prime / Alt-A & option ARMs \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	1,377	1,526
Residential mortgage \| Other financial assets \| Subprime \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	0	0
Commercial and other
Firm sponsored mortgage and other consumer securitization trusts
Total assets held by securitization VIEs	225,166	212,555
Commercial and other \| Investment-grade
Firm sponsored mortgage and other consumer securitization trusts
Fair value of retained interests	5,600	6,200
Commercial and other \| Noninvestment-grade
Firm sponsored mortgage and other consumer securitization trusts
Fair value of retained interests	1,200	1,100
Commercial and other \| VIEs consolidated by the Firm
Firm sponsored mortgage and other consumer securitization trusts
Assets held in consolidated securitization VIEs	139	170
Commercial and other \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Assets held in nonconsolidated securitization VIEs with continuing involvement	152,310	138,986
Interest in securitized assets in nonconsolidated VIEs	6,862	7,330
Commercial and other \| Trading assets \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	897	1,222
Commercial and other \| Investment securities \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	5,083	5,285
Commercial and other \| Other financial assets \| Nonconsolidated entities
Firm sponsored mortgage and other consumer securitization trusts
Interest in securitized assets in nonconsolidated VIEs	$ 882	$ 823

Firm-sponsored mortgage and other consumer securitization trusts.

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Percent of retained securitization interests rated A or better.

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No definition available.

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- Definition

Senior securities purchased in connection with IB secondary market making activities. These securities are excluded from entity interest in securitized assets in nonconsolidated VIEs.

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No definition available.

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Subordinated securities purchased in connection with IB secondary market making Activities. These securities are excluded from entity interest in securitized assets in nonconsolidated VIEs.

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No definition available.

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Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

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Amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction that have been derecognized. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

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The carrying amount (fair value) as of the balance sheet date of the transferor's interests in transferred financial assets (typically securitized receivables, generally not involved in the collection of principal) following transfer of significant portions of such financial instruments to other parties. Such interests could be ancillary cash flows and interest-only strips.

+ References

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Fair value portion of interest continued to be held by a transferor after transferring financial assets to a third party.

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