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PARENT COMPANY FINANCIAL STATEMENTS - Schedule of Consolidated Balance Sheet of Parent Company Only (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Cash and cash equivalents | $ 2,498 | $ 2,419 |  |
Other assets | 1,283 | 1,302 |  |
Total Assets | 50,229 | 48,625 | $ 46,158 |
Other liabilities | 793 | 948 |  |
Long-term borrowings | 1,901 | 3,012 |  |
Long-term | 86 | 74 |  |
Total Liabilities | 43,470 | 42,323 |  |
Shareholders’ Equity | 6,759 | 6,302 | $ 6,050 | $ 5,653
Total Liabilities and Shareholders’ Equity | 50,229 | 48,625 |  |
Parent Company |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Cash and cash equivalents | 288 | 803 |  |
Other assets | 158 | 185 |  |
Total Assets | 7,829 | 7,841 |  |
Other liabilities | 138 | 142 |  |
Advances from affiliates | 206 | 197 |  |
Long-term borrowings | 720 | 1,193 |  |
Short-term | 5 | 6 |  |
Long-term | 1 | 1 |  |
Total Liabilities | 1,070 | 1,539 |  |
Shareholders’ Equity | 6,759 | 6,302 |  |
Total Liabilities and Shareholders’ Equity | 7,829 | 7,841 |  |
Parent Company | Bank Subsidiary |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Investment in bank subsidiary and advances to non-bank subsidiaries | 6,791 | 6,272 |  |
Parent Company | Non-bank Subsidiaries |  |  |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |  |  |
Investment in bank subsidiary and advances to non-bank subsidiaries | $ 592 | $ 581 |  |

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