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Fair Value (Recurring Fair Value Measurements) (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Assets |  |
Investment securities – available for sale | $ 51,188 | $ 41,785
Mortgage servicing rights | 3,739 | 3,686
Financial derivatives | 660 | 897
Liabilities |  |
Financial derivatives | 3,706 | 3,538
Other liabilities | 100 | $ 100
Unrealized gain on Visa C shares | $ 244 |
Assets At Fair Value | Assets, Total | Assets |  |
Liabilities |  |
Concentration risk, percentage | 12.00% | 10.00%
Level 3 Assets | Assets, Total | Assets |  |
Liabilities |  |
Concentration risk, percentage | 11.00% | 13.00%
Level 3 Assets | Assets | Assets |  |
Liabilities |  |
Concentration risk, percentage | 1.00% | 1.00%
Liabilities At Fair Value | Liabilities, Total | Liability |  |
Liabilities |  |
Concentration risk, percentage | 1.00% | 1.00%
Level Three Liabilities | Liabilities, Total | Liability |  |
Liabilities |  |
Concentration risk, percentage | 5.00% | 6.00%
Level Three Liabilities | Liability | Liability |  |
Liabilities |  |
Concentration risk, percentage | 1.00% | 1.00%
Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | $ 51,188 | $ 41,785
Loans | 1,191 | 1,238
Equity investments | 3,203 | 2,717
Trading securities | 2,350 | 2,799
Financial derivatives | 3,120 | 3,429
Other assets | 568 | 496
Total Assets | 66,296 | 56,862
Liabilities |  |
Other borrowed funds | 791 | 817
Financial derivatives | 6,216 | 5,899
Other liabilities | 194 | 237
Total liabilities | 7,201 | 6,953
Level 1 | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 15,513 | 6,292
Equity investments | 972 | 574
Trading securities | 515 | 377
Financial derivatives | 5 | 29
Other assets | 431 | 403
Total Assets | 17,436 | 7,675
Liabilities |  |
Other borrowed funds | 661 | 724
Financial derivatives | 6 | 11
Total liabilities | 667 | 735
Level 2 | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 34,798 | 34,537
Loans | 490 | 512
Trading securities | 1,835 | 2,422
Financial derivatives | 3,103 | 3,394
Other assets | 129 | 85
Total Assets | 41,193 | 41,548
Liabilities |  |
Other borrowed funds | 121 | 84
Financial derivatives | 6,027 | 5,736
Total liabilities | 6,148 | 5,820
Level 3 |  |
Assets |  |
Commercial mortgage loans held for sale | 4 | 11
Equity investments | 2,030 | 1,952
Liabilities |  |
Financial derivatives | 180 | 145
Level 3 | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 877 | 956
Loans | 701 | 726
Equity investments | 2,030 | 1,952
Financial derivatives | 12 | 6
Other assets | 8 | 8
Total Assets | 7,466 | 7,448
Liabilities |  |
Other borrowed funds | 9 | 9
Financial derivatives | 183 | 152
Other liabilities | 194 | 237
Total liabilities | 386 | 398
Residential mortgage loans held for sale | Fair Value, Recurring |  |
Assets |  |
Commercial mortgage loans held for sale | 642 | 474
Residential mortgage loans held for sale | Level 2 | Fair Value, Recurring |  |
Assets |  |
Commercial mortgage loans held for sale | 547 | 371
Residential mortgage loans held for sale | Level 3 | Fair Value, Recurring |  |
Assets |  |
Commercial mortgage loans held for sale | 95 | 103
Commercial mortgage loans held for sale | Fair Value, Recurring |  |
Assets |  |
Commercial mortgage loans held for sale | 295 | 238
Commercial mortgage loans held for sale | Level 2 | Fair Value, Recurring |  |
Assets |  |
Commercial mortgage loans held for sale | 291 | 227
Commercial mortgage loans held for sale | Level 3 | Fair Value, Recurring |  |
Assets |  |
Commercial mortgage loans held for sale | 4 | 11
U.S. Treasury and government agencies | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 16,474 | 6,951
U.S. Treasury and government agencies | Level 1 | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 15,513 | 6,292
U.S. Treasury and government agencies | Level 2 | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 961 | 659
Residential mortgage-backed | Mortgage-backed Securities Agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 27,096 | 27,880
Residential mortgage-backed | Mortgage-backed Securities Non-agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 624 | 696
Residential mortgage-backed | Level 2 | Mortgage-backed Securities Agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 27,096 | 27,880
Residential mortgage-backed | Level 2 | Mortgage-backed Securities Non-agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale |  |
Residential mortgage-backed | Level 3 | Mortgage-backed Securities Non-agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 624 | 696
Commercial mortgage servicing rights | Mortgage-backed Securities Agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 1,617 | 1,546
Commercial mortgage servicing rights | Mortgage-backed Securities Non-agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 797 | 869
Commercial mortgage servicing rights | Level 2 | Mortgage-backed Securities Agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 1,617 | 1,546
Commercial mortgage servicing rights | Level 2 | Mortgage-backed Securities Non-agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 694 | 766
Commercial mortgage servicing rights | Level 3 | Mortgage-backed Securities Non-agency | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 103 | 103
Asset-backed | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 2,120 | 1,116
Asset-backed | Level 2 | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 2,024 | 1,014
Asset-backed | Level 3 | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 96 | 102
Other | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 2,460 | 2,727
Other | Level 2 | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 2,406 | 2,672
Other | Level 3 | Fair Value, Recurring |  |
Assets |  |
Investment securities – available for sale | 54 | 55
Residential mortgage servicing rights | Fair Value, Recurring |  |
Assets |  |
Mortgage servicing rights | 2,657 | 2,654
Residential mortgage servicing rights | Level 3 | Fair Value, Recurring |  |
Assets |  |
Mortgage servicing rights | 2,657 | 2,654
Commercial mortgage servicing rights | Fair Value, Recurring |  |
Assets |  |
Mortgage servicing rights | 1,082 | 1,032
Commercial mortgage servicing rights | Level 3 | Fair Value, Recurring |  |
Assets |  |
Mortgage servicing rights | $ 1,082 | $ 1,032

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