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Fair Value (Reconciliation of Recurring Fair Value Measurements) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet |  |  |  |
Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 7,308 | 7,466 | 7,431 | 7,448
Included in Earnings | 103 | (80) | 141 | 235
Included in other comprehensive income | (1) | 24 | 13 | 13
Purchases | 296 | 114 | 654 | 334
Sales | (86) | (105) | (239) | (202)
Issuances | 25 | 18 | 63 | 41
Settlements | (210) | (208) | (621) | (629)
Transfers into Level 3 | 6 | 1 | 18 | 4
Transfers out of Level 3 | (11) | (5) | (30) | (19)
Ending balance | 7,430 | 7,225 | 7,430 | 7,225
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 101 | (90) | 107 | 210
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 238 | 386 | 337 | 398
Included in Earnings | 42 | 138 | 99 | 242
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 1 | 2 | 4 | 4
Issuances | 218 | 3 | 228 | 38
Settlements | (242) | (64) | (411) | (217)
Transfers into Level 3 | 11 | 0 | 11 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 268 | 465 | 268 | 465
Unrealized gains/losses for the period on liabilities held on Consolidated Balance Sheet | 51 | 132 | 98 | 263
Fair Value Additional Information [Abstract] |  |  |  |
Net gains (losses) included in earnings (realized and unrealized) relating to Level 3 assets and liabilities | 61 | (218) | 42 | (7)
Net unrealized gains (losses) relating to Level 3 assets and liabilities | 50 | (222) | 9 | (53)
Fair Value, Recurring | Level 3 | Other borrowed funds |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 11 | 9 | 10 | 9
Included in Earnings | 0 | 0 | 0 | 0
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issuances | 3 | 2 | 13 | 9
Settlements | (4) | (3) | (13) | (10)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 10 | 8 | 10 | 8
Unrealized gains/losses for the period on liabilities held on Consolidated Balance Sheet | 0 | 0 | 0 | 0
Fair Value, Recurring | Level 3 | Financial derivatives |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 109 | 183 | 150 | 152
Included in Earnings | 26 | 128 | 67 | 246
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 1 | 2 | 4 | 4
Issuances | 0 | 0 | 0 | 0
Settlements | (28) | (32) | (113) | (121)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 108 | 281 | 108 | 281
Unrealized gains/losses for the period on liabilities held on Consolidated Balance Sheet | 34 | 129 | 70 | 252
Fair Value, Recurring | Level 3 | Other liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 118 | 194 | 177 | 237
Included in Earnings | 16 | 10 | 32 | (4)
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issuances | 215 | 1 | 215 | 29
Settlements | (210) | (29) | (285) | (86)
Transfers into Level 3 | 11 | 0 | 11 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 150 | 176 | 150 | 176
Unrealized gains/losses for the period on liabilities held on Consolidated Balance Sheet | 17 | 3 | 28 | 11
Loans held for sale | Fair Value, Recurring | Level 3 | Residential mortgage loans held for sale |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 130 | 95 | 68 | 103
Included in Earnings | 0 | 1 | 1 | 0
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 4 | 2 | 77 | 16
Sales | (1) | (26) | (2) | (37)
Issuances | 0 | 0 | 0 | 0
Settlements | (7) | (2) | (13) | (6)
Transfers into Level 3 | 1 | 1 | 6 | 4
Transfers out of Level 3 | (5) | (1) | (15) | (10)
Ending balance | 122 | 70 | 122 | 70
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 0 | 2 | 1 | 0
Loans held for sale | Fair Value, Recurring | Level 3 | Commercial mortgage loans held for sale |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 1 | 4 | 4 | 11
Included in Earnings | 0 | 1 | 0 | 1
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | (1) | (1) | (4) | (8)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 0 | 4 | 0 | 4
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 0 | 0 | 0 | 0
Securities available-for-sale | Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 805 | 877 | 853 | 956
Included in Earnings | 2 | 4 | 6 | 8
Included in other comprehensive income | (1) | 24 | 11 | 13
Purchases | 3 | 1 | 6 | 4
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | (28) | (25) | (95) | (100)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 781 | 881 | 781 | 881
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 0 | 0 | (3) | (2)
Residential mortgage- backed non-agency | Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 581 | 624 | 603 | 696
Included in Earnings | 2 | 4 | 7 | 10
Included in other comprehensive income | (1) | 21 | 8 | 10
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | (22) | (21) | (58) | (88)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 560 | 628 | 560 | 628
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 0 | 0 | 0 | 0
Commercial mortgage- backed non-agency | Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 79 | 103 | 103 | 103
Included in Earnings | 0 | 0 | (3) | 0
Included in other comprehensive income | 0 | 0 | 1 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | 0 | 0 | (22) | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 79 | 103 | 79 | 103
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 0 | 0 | (3) | 0
Asset-backed | Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 90 | 96 | 93 | 102
Included in Earnings | 0 | 1 | 1 | 1
Included in other comprehensive income | 1 | 3 | 2 | 2
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | (3) | (4) | (8) | (9)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 88 | 96 | 88 | 96
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 0 | 0 | 0 | 0
Other | Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 55 | 54 | 54 | 55
Included in Earnings | 0 | (1) | 1 | (3)
Included in other comprehensive income | (1) | 0 | 0 | 1
Purchases | 3 | 1 | 6 | 4
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | (3) | 0 | (7) | (3)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 54 | 54 | 54 | 54
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 0 | 0 | 0 | (2)
Loans | Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 651 | 701 | 670 | 726
Included in Earnings | 4 | 4 | 9 | 12
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 5 | 4 | 22 | 16
Sales | (2) | 0 | (3) | (2)
Issuances | 0 | 0 | 0 | 0
Settlements | (17) | (21) | (55) | (59)
Transfers into Level 3 | 5 | 0 | 12 | 0
Transfers out of Level 3 | (6) | (4) | (15) | (9)
Ending balance | 640 | 684 | 640 | 684
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 4 | 5 | 9 | 12
Equity investments | Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 2,232 | 2,030 | 2,111 | 1,952
Included in Earnings | 34 | 27 | 89 | 53
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 54 | 85 | 270 | 221
Sales | (83) | (79) | (233) | (163)
Issuances | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 2,237 | 2,063 | 2,237 | 2,063
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 33 | 16 | 62 | 35
Mortgage Servicing Rights | Fair Value, Recurring | Level 3 | Residential mortgage loans held for sale |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 2,457 | 2,657 | 2,626 | 2,654
Included in Earnings | 10 | (71) | (47) | 17
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 215 | 1 | 216 | 30
Sales | 0 | 0 | 0 | 0
Issuances | 8 | 6 | 22 | 18
Settlements | (68) | (65) | (195) | (191)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 2,622 | 2,528 | 2,622 | 2,528
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 10 | (71) | (47) | 17
Mortgage Servicing Rights | Fair Value, Recurring | Level 3 | Commercial mortgage loans held for sale |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 1,010 | 1,082 | 1,085 | 1,032
Included in Earnings | 42 | (54) | 53 | 118
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 14 | 19 | 59 | 43
Sales | 0 | 0 | 0 | 0
Issuances | 17 | 12 | 41 | 23
Settlements | (78) | (84) | (233) | (241)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 1,005 | 975 | 1,005 | 975
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 42 | (54) | 53 | 118
Financial derivatives | Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 9 | 12 | 4 | 6
Included in Earnings | 11 | 8 | 30 | 26
Included in other comprehensive income | 0 | 0 | 0 | 0
Purchases | 0 | 2 | 1 | 4
Sales | 0 | 0 | 0 | 0
Issuances | 0 | 0 | 0 | 0
Settlements | (11) | (10) | (26) | (24)
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 9 | 12 | 9 | 12
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | 12 | 12 | 32 | 30
Other assets | Fair Value, Recurring | Level 3 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 13 |  | 10 | 8
Included in Earnings | 0 | 0 | 0 | 0
Included in other comprehensive income | 0 | 0 | 2 | 0
Purchases | 1 | 0 | 3 | 0
Sales | 0 | 0 | (1) | 0
Issuances | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Ending balance | 14 | 8 | 14 | 8
Unrealized gains/losses for the period on assets held on Consolidated Balance Sheet | $ 0 |  | $ 0 | $ 0

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- Definition This item represents the amount of the net change in unrealized (holding) gains or losses for the period which are included in the statement of income. Such unrealized (holding) gains or losses relate to those assets and liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). + References No definition available. + Details
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- Definition This element represents net gains or losses for the period (realized and unrealized), arising from assets and liabilities measure at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value. + References No definition available. + Details
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- Definition Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 102 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-102 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of unrealized gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3) and still held. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2G -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2G Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2G -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2G Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 102 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-102 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of issuances of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2G -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2G Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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