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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2025
Accounting Policies [Abstract] |
Summary of Cash and Cash Equivalents | This table provides a summary of cash and cash equivalents as presented on the Consolidated Statements of Cash Flows as of September 30, 2025 and September 30, 2024 (in thousands):
|  | September 30, |
|  | 2025 |  |  | 2024 |
Due from the FRB |  | $ | 7,768,405 |  |  | $ | 6,498,695 |
Cash and due from banks |  |  | 1,073,005 |  |  |  | 778,069 |
Cash and cash equivalents at end of period |  | $ | 8,841,410 |  |  | $ | 7,276,764 |
Summary of Amounts Used in Determination of Basic and Diluted Net Income Per Common Share | The following table provides the amounts used in the determination of basic and diluted net income per common share for the three and nine months ended September 30, 2025 and 2024 (in thousands, except share and per share data):
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Net income |  | $ | 188,316 |  |  | $ | 109,643 |  |  | $ | 487,043 |  |  | $ | 321,246 |
Less: Preferred dividends |  |  | 7,944 |  |  |  | — |  |  |  | 11,969 |  |  |  | — |
Net income available to common shareholders |  | $ | 180,372 |  |  | $ | 109,643 |  |  | $ | 475,074 |  |  | $ | 321,246 |
Weighted average common shares outstanding for basic earnings per share |  |  | 75,943,943 |  |  |  | 48,775,072 |  |  |  | 72,349,952 |  |  |  | 48,727,914 |
Assumed incremental common shares issued upon vesting of outstanding restricted stock units |  |  | 422,875 |  |  |  | 303,425 |  |  |  | 394,337 |  |  |  | 265,667 |
Weighted average common shares for diluted earnings per share |  |  | 76,366,818 |  |  |  | 49,078,497 |  |  |  | 72,744,289 |  |  |  | 48,993,581 |
Net income per common share – basic |  | $ | 2.38 |  |  | $ | 2.25 |  |  | $ | 6.57 |  |  | $ | 6.59 |
Net income per common share – diluted |  |  | 2.36 |  |  |  | 2.23 |  |  |  | 6.53 |  |  |  | 6.56 |
Number of antidilutive restricted stock units excluded from diluted earnings per share computation |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Number of antidilutive stock options excluded from diluted earnings per share computation |  |  | — |  |  |  | — |  |  |  | 4,962 |  |  |  | — |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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