Variable Interest Entities and Securitization Activities - Assets and Liabilities by Type of Activity (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Variable Interest Entity
VIE Assets	$ 1,581,418	$ 1,420,270
VIE Liabilities	1,466,034	1,307,618
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity
VIE Assets	3,520	2,559
VIE Liabilities	2,435	1,661
Variable Interest Entity, Primary Beneficiary \| MABS
Variable Interest Entity
VIE Assets	1,115	468
VIE Liabilities	517	2
Variable Interest Entity, Primary Beneficiary \| Investment vehicles
Variable Interest Entity
VIE Assets	654	263
VIE Liabilities	384	5
Variable Interest Entity, Primary Beneficiary \| MTOB
Variable Interest Entity
VIE Assets	1,631	1,781
VIE Liabilities	1,529	1,651
Variable Interest Entity, Primary Beneficiary \| Other
Variable Interest Entity
VIE Assets	120	47
VIE Liabilities	$ 5	$ 3

Amount of asset recognized for present right to economic benefit.

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+ Details

- Definition

Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others.

+ References

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+ Details

- Definition

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.

+ References + Details