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Loans - Commercial Banking: Risk Profile by Internal Risk Rating (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total loans held for investment | $ 318,186 | $ 320,472
Commercial Banking: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term Loans by Vintage Year, Year 1 | 3,953 | 10,556
Term Loans by Vintage Year, Year 2 | 9,358 | 18,879
Term Loans by Vintage Year, Year 3 | 16,848 | 11,282
Term Loans by Vintage Year, Year 4 | 9,842 | 5,124
Term Loans by Vintage Year, Year 5 | 4,503 | 5,444
Prior | 14,877 | 10,271
Total Term Loans | 59,381 | 61,556
Revolving Loans | 29,024 | 28,740
Revolving Loans Converted to Term | 223 | 192
Total loans held for investment | 88,628 | 90,488
Commercial Banking: | Commercial and multifamily real estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term Loans by Vintage Year, Year 1 | 1,218 | 3,281
Term Loans by Vintage Year, Year 2 | 2,581 | 6,185
Term Loans by Vintage Year, Year 3 | 5,401 | 3,603
Term Loans by Vintage Year, Year 4 | 3,064 | 1,303
Term Loans by Vintage Year, Year 5 | 1,131 | 2,614
Prior | 6,586 | 4,737
Total Term Loans | 19,981 | 21,723
Revolving Loans | 12,728 | 12,698
Revolving Loans Converted to Term | 123 | 25
Total loans held for investment | 32,832 | 34,446
Commercial Banking: | Commercial and multifamily real estate | Noncriticized |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term Loans by Vintage Year, Year 1 | 1,134 | 3,068
Term Loans by Vintage Year, Year 2 | 2,511 | 4,665
Term Loans by Vintage Year, Year 3 | 3,821 | 2,773
Term Loans by Vintage Year, Year 4 | 2,245 | 1,019
Term Loans by Vintage Year, Year 5 | 914 | 2,104
Prior | 4,974 | 3,670
Total Term Loans | 15,599 | 17,299
Revolving Loans | 12,499 | 12,565
Revolving Loans Converted to Term | 25 | 25
Total loans held for investment | 28,123 | 29,889
Commercial Banking: | Commercial and multifamily real estate | Criticized | Criticized performing |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term Loans by Vintage Year, Year 1 | 72 | 148
Term Loans by Vintage Year, Year 2 | 60 | 1,494
Term Loans by Vintage Year, Year 3 | 1,555 | 706
Term Loans by Vintage Year, Year 4 | 713 | 284
Term Loans by Vintage Year, Year 5 | 217 | 463
Prior | 1,351 | 904
Total Term Loans | 3,968 | 3,999
Revolving Loans | 221 | 133
Revolving Loans Converted to Term | 98 | 0
Total loans held for investment | 4,287 | 4,132
Commercial Banking: | Commercial and multifamily real estate | Criticized | Criticized nonperforming |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term Loans by Vintage Year, Year 1 | 12 | 65
Term Loans by Vintage Year, Year 2 | 10 | 26
Term Loans by Vintage Year, Year 3 | 25 | 124
Term Loans by Vintage Year, Year 4 | 106 | 0
Term Loans by Vintage Year, Year 5 | 0 | 47
Prior | 261 | 163
Total Term Loans | 414 | 425
Revolving Loans | 8 | 0
Revolving Loans Converted to Term | 0 | 0
Total loans held for investment | 422 | 425
Commercial Banking: | Commercial and industrial |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term Loans by Vintage Year, Year 1 | 2,735 | 7,275
Term Loans by Vintage Year, Year 2 | 6,777 | 12,694
Term Loans by Vintage Year, Year 3 | 11,447 | 7,679
Term Loans by Vintage Year, Year 4 | 6,778 | 3,821
Term Loans by Vintage Year, Year 5 | 3,372 | 2,830
Prior | 8,291 | 5,534
Total Term Loans | 39,400 | 39,833
Revolving Loans | 16,296 | 16,042
Revolving Loans Converted to Term | 100 | 167
Total loans held for investment | 55,796 | 56,042
Commercial Banking: | Commercial and industrial | Noncriticized |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term Loans by Vintage Year, Year 1 | 2,674 | 6,909
Term Loans by Vintage Year, Year 2 | 6,610 | 11,935
Term Loans by Vintage Year, Year 3 | 10,576 | 6,994
Term Loans by Vintage Year, Year 4 | 6,008 | 3,566
Term Loans by Vintage Year, Year 5 | 3,018 | 2,359
Prior | 7,547 | 5,117
Total Term Loans | 36,433 | 36,880
Revolving Loans | 15,082 | 14,822
Revolving Loans Converted to Term | 57 | 167
Total loans held for investment | 51,572 | 51,869
Commercial Banking: | Commercial and industrial | Criticized | Criticized performing |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term Loans by Vintage Year, Year 1 | 30 | 353
Term Loans by Vintage Year, Year 2 | 92 | 706
Term Loans by Vintage Year, Year 3 | 750 | 655
Term Loans by Vintage Year, Year 4 | 747 | 237
Term Loans by Vintage Year, Year 5 | 173 | 348
Prior | 576 | 349
Total Term Loans | 2,368 | 2,648
Revolving Loans | 941 | 1,189
Revolving Loans Converted to Term | 43 | 0
Total loans held for investment | 3,352 | 3,837
Commercial Banking: | Commercial and industrial | Criticized | Criticized nonperforming |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term Loans by Vintage Year, Year 1 | 31 | 13
Term Loans by Vintage Year, Year 2 | 75 | 53
Term Loans by Vintage Year, Year 3 | 121 | 30
Term Loans by Vintage Year, Year 4 | 23 | 18
Term Loans by Vintage Year, Year 5 | 181 | 123
Prior | 168 | 68
Total Term Loans | 599 | 305
Revolving Loans | 273 | 31
Revolving Loans Converted to Term | 0 | 0
Total loans held for investment | $ 872 | $ 336

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