Securitizations and Variable Interest Entities, Transfers with Continuing Involvement (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Excluding resecuritization [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Cash flows from other interests held	$ 143	$ 311	$ 263
Excluding resecuritization [Member] \| Fair value, inputs, level 2 [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Securities recognized, trading	4,200	4,200	6,000
Excluding resecuritization [Member] \| Total Consumer [Member] \| Residential mortgage [Member]
Quantitative Information, Transferor's Continuing Involvement [Line Items]
Assets sold	8,239	8,303	13,823
Proceeds from transfer	8,239	8,303	13,823
Net gains (losses) on sale	0	0	0
Excluding resecuritization [Member] \| Total Consumer [Member] \| Residential mortgage [Member] \| Fair value, inputs, level 3 [Member]
Quantitative Information, Transferor's Continuing Involvement [Line Items]
Servicing rights recognized	96	87	157
Excluding resecuritization [Member] \| Total Consumer [Member] \| Residential mortgage [Member] \| Fair value, inputs, level 2 [Member]
Quantitative Information, Transferor's Continuing Involvement [Line Items]
Securities recognized	0	0	0
Excluding resecuritization [Member] \| Total Commercial [Member] \| Commercial mortgages [Member]
Quantitative Information, Transferor's Continuing Involvement [Line Items]
Assets sold	16,659	18,132	8,872
Proceeds from transfer	16,769	18,321	9,017
Net gains (losses) on sale	110	189	145
Excluding resecuritization [Member] \| Total Commercial [Member] \| Commercial mortgages [Member] \| Fair value, inputs, level 3 [Member]
Quantitative Information, Transferor's Continuing Involvement [Line Items]
Servicing rights recognized	112	81	73
Excluding resecuritization [Member] \| Total Commercial [Member] \| Commercial mortgages [Member] \| Fair value, inputs, level 2 [Member]
Quantitative Information, Transferor's Continuing Involvement [Line Items]
Securities recognized	217	167	94
Government insured or guaranteed [Member] \| Excluding resecuritization [Member] \| Total Consumer [Member] \| Residential mortgage [Member]
Quantitative Information, Transferor's Continuing Involvement [Line Items]
Net gains (losses) on sale	0	0
VIEs that we do not consolidate [Member] \| Excluding resecuritization [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Maximum exposure to loss	6,292	8,937
VIEs that we do not consolidate [Member] \| Excluding resecuritization [Member] \| Debt, guarantees, and other commitments [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Maximum exposure to loss	998	856
VIEs that we do not consolidate [Member] \| Conforming mortgage loan securitization [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Carrying value of delinquent loans eligible for repurchase	751	1,500
Principal amount that would be payable to securitization vehicles	751	1,500
Repurchases of assets/loss reimbursements	392	138	$ 293
VIEs that we do not consolidate [Member] \| Conforming mortgage loan securitization [Member] \| Debt and other liabilities [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Liability for mortgage repurchase reserves amount, fair value	189	188
VIEs that we do not consolidate [Member] \| Conforming mortgage loan securitization [Member] \| Debt, guarantees, and other commitments [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Maximum exposure to loss	$ 13,900	$ 13,700

Cash Flows between a transferor and a transferee attributable to purchases of previously transferred financial assets (or its underlying collateral) related to a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction (including, but not limited to, servicing, recourse, and restrictions on transferor's interests in the transferred financial assets).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-3

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- Definition

Cash flows between transferee and transferor in payment of the transferor's beneficial interest related to a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction.

+ References

No definition available.

+ Details

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- Definition

A gain (loss) realized on a transfer, accounted for as a sale, of all or a portion of financial assets in which the transferor surrenders control and receives consideration other than a beneficial interest in the assets transferred. Reflects the amount of sales proceeds in excess of, or deficient from, the sum of the carrying amounts of transferred financial assets plus transaction costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(7)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-3

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(13))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

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- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-6

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-4

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- Definition

The fair value of available-for-sale and held-to-maturity debt and equity securities recognized at the settlement date upon transfer of financial assets, that are measured using Level 2 measurements.

+ References

No definition available.

+ Details

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- Definition

The liability for mortgage repurchase reserves that are measured using Level 3 measurements. The liability is related to servicing rights that are created when mortgages are sold or transferred.

+ References

No definition available.

+ Details

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- Definition

Principal amount, included in liabilities, that would be payable to the securitization vehicles if the Company were to exercise the repurchase option.

+ References

No definition available.

+ Details

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- Definition

[Line Items] for Quantitative information related to a transferor's continuing involvement with financial assets transferred to a transferee in a securitization, asset-backed financing arrangement, or similar transfer.

+ References

No definition available.

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- Definition

Securitizations and Variable Interest Entities Textual Abstract.

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- Definition

The fair value of an asset recognized upon transfer of financial assets, representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs, that are measured using Level 3 measurements.

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

The fair value of trading debt and equity securities recognized at the settlement date upon transfer of financial assets, that are measured using Level 2 measurements.

+ References

No definition available.

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- Definition

Amount during the period of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction.

+ References

No definition available.

+ Details

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Amount during the period, before counterparty netting, of cash proceeds received in transfers of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction.

+ References

No definition available.

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- Definition

Unpaid principal balance of mortgage loans eligible for repurchase from unconsolidated residential mortgage securitization vehicles, principally guaranteed by GNMA, included in assets.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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