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Credit Quality and the Allowance for Loan and Lease Losses - Summary of Recorded Investment in Portfolio Loans and Leases by Age and Class (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | $ 178,528 | $ 122,651
Commercial |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 124,880 | 73,562
90 Days Past Due and Still Accruing | 5 | 3
Commercial | Current |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 124,382 | 73,264
Commercial | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 498 | 298
Commercial | 30 to 89 Days |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 343 | 188
Commercial | 90 Days or More |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 155 | 110
Commercial | Commercial and industrial loans |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 85,736 | 52,749
90 Days Past Due and Still Accruing | 4 | 2
Commercial | Commercial and industrial loans | Current |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 85,474 | 52,481
Commercial | Commercial and industrial loans | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 262 | 268
Commercial | Commercial and industrial loans | 30 to 89 Days |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 176 | 173
Commercial | Commercial and industrial loans | 90 Days or More |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 86 | 95
Commercial | Commercial mortgage owner-occupied loans |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 12,221 | 6,142
90 Days Past Due and Still Accruing | 0 | 0
Commercial | Commercial mortgage owner-occupied loans | Current |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 12,171 | 6,127
Commercial | Commercial mortgage owner-occupied loans | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 50 | 15
Commercial | Commercial mortgage owner-occupied loans | 30 to 89 Days |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 31 | 3
Commercial | Commercial mortgage owner-occupied loans | 90 Days or More |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 19 | 12
Commercial | Commercial mortgage nonowner-occupied loans |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 14,975 | 6,086
90 Days Past Due and Still Accruing | 1 | 0
Commercial | Commercial mortgage nonowner-occupied loans | Current |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 14,841 | 6,083
Commercial | Commercial mortgage nonowner-occupied loans | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 134 | 3
Commercial | Commercial mortgage nonowner-occupied loans | 30 to 89 Days |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 130 | 1
Commercial | Commercial mortgage nonowner-occupied loans | 90 Days or More |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 4 | 2
Commercial | Commercial construction loans |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 8,459 | 5,316
90 Days Past Due and Still Accruing | 0 | 1
Commercial | Commercial construction loans | Current |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 8,413 | 5,315
Commercial | Commercial construction loans | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 46 | 1
Commercial | Commercial construction loans | 30 to 89 Days |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 0 | 0
Commercial | Commercial construction loans | 90 Days or More |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 46 | 1
Commercial | Commercial leases |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 3,489 | 3,269
90 Days Past Due and Still Accruing | 0 | 0
Commercial | Commercial leases | Current |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 3,483 | 3,258
Commercial | Commercial leases | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 6 | 11
Commercial | Commercial leases | 30 to 89 Days |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | 6 | 11
Commercial | Commercial leases | 90 Days or More |  |
Financing Receivable, Recorded Investment, Past Due |  |
Total portfolio loans and leases | $ 0 | $ 0

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