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Commitments (Other Commitments) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Other Commitments [Line Items]
Commitments	$ 313,900	$ 295,100
Investments in qualified affordable housing projects	2,800	2,200
Commitments to extend credit
Other Commitments [Line Items]
Commitments	294,302	277,785
Commitments to extend credit | Commercial
Other Commitments [Line Items]
Commitments	223,730	209,864
Commitments to extend credit | Home equity
Other Commitments [Line Items]
Commitments	23,861	24,086
Commitments to extend credit | Credit card
Other Commitments [Line Items]
Commitments	38,911	36,447
Commitments to extend credit | Other
Other Commitments [Line Items]
Commitments	7,800	7,388
Standby letters of credit
Other Commitments [Line Items]
Commitments	11,417	11,251
Standby letters of credit | Remarketing Programs
Other Commitments [Line Items]
Commitments	3,500	3,700
Standby bond purchase agreements
Other Commitments [Line Items]
Commitments	1,277	1,095
Other commitments
Other Commitments [Line Items]
Commitments	$ 6,904	$ 4,969

X

- Definition

Represents the liability related to investments in low income housing tax credits which is reflected in other liabilities on our Consolidated Balance Sheet.

+ References

No definition available.

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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- Definition

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No definition available.

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