Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation SVB Financial Group is a diversified financial services company, as well as a bank holding company and a financial holding company. SVB Financial was incorporated in the state of Delaware in March 1999. Through our various subsidiaries and divisions, we offer a diverse set of banking and financial products and services to support our clients of all sizes and stages throughout their life cycles. In these notes to our unaudited interim consolidated financial statements, when we refer to “SVB,” “SVB Financial Group,” “SVBFG," the “Company,” “we,” “our,” “us” or use similar words, we mean SVB Financial Group and all of its subsidiaries collectively, including Silicon Valley Bank (the “Bank”), unless the context requires otherwise. When we refer to “SVB Financial” or the “Parent” we are referring only to the parent company, SVB Financial Group (not including subsidiaries). The accompanying unaudited interim consolidated financial statements reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary to fairly present our financial position, results of operations and cash flows in accordance with GAAP. Such unaudited interim consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The results of operations for the three and nine months ended September 30, 2022 are not necessarily indicative of results to be expected for any future periods. These unaudited interim consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2021 (“2021 Form 10-K”). Use of Estimates and Assumptions The preparation of unaudited interim consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates may change as new information is obtained. Among the more significant estimates are those that relate to: 1) ACL for loans and for unfunded credit commitments, 2) valuation of non-marketable and other equity securities, 3) valuation of equity warrant assets, 4) goodwill, intangible assets and other purchase accounting related adjustments, and 5) income taxes. Principles of Consolidation and Presentation Our unaudited interim consolidated financial statements include the accounts of SVB Financial Group and consolidated entities. All significant intercompany accounts and transactions with consolidated entities have been eliminated. For a further description of our accounting policies regarding consolidation refer to Consolidated Financial Statements and Supplementary Data — Note 2 — “Summary of Significant Accounting Policies” under Part II, Item 8 of our 2021 Form 10-K. Reclassifications Certain prior period amounts have been reclassified to conform to current period presentation to account for the change in presentation of derivative asset and liability positions and the related cash collateral disclosed in the Summary of Significant Accounting Polices in Part 1, Item 1 of this report. These changes are included in our Consolidated Balance Sheets (unaudited) and Consolidated Statements of Cash Flows (unaudited) as well as the Cash and Cash Equivalents, Derivative Financial Instruments and Fair Value of Financial Instruments footnotes. Summary of Significant Accounting Policies During the third quarter of 2022, we changed our presentation of derivative asset and liability positions and the related cash collateral in the unaudited interim consolidated balance sheets. The balances are presented net by counterparty when a legally enforceable right of setoff exists under a master netting arrangement in accordance with ASC 815, Derivatives and Hedging. Previously, fair values of derivative positions were reported in the line items “Accrued interest receivable and other assets” and “Other liabilities” gross. The related cash collateral was reported in the line items "Cash and cash equivalents" and "Short-term borrowings". For impact on presentation, please refer to the balance sheet offsetting section of Note 8 – “Derivative Financial Instruments”. This change had no impact on our net income. We concluded that this presentation was preferable as it better reflects the credit risk of derivatives traded under master netting arrangements. This change represents a change in accounting principle under ASC 250, Accounting Changes and Error Corrections, with retrospective application to the earliest period presented. In the third quarter of 2022, we also adjusted the allowance models for the CRE and Other C&I loan portfolios to more precisely forecast lifetime loan losses for those portfolios. As a result, the allowance model for the CRE loan portfolio uses a reasonable and supportable forecast period that is less than, but approximately, three years; the Company continues to use a three-year reasonable and supportable forecast period for all other loan loss models. Subsequent to the forecast period period, the CRE and Other C&I models' reversion to average historical losses uses an approach that gradually trends towards the mean historical loss over the remaining contractual lives of loans, whereas all other loan models continue to use an autoregressive approach. The impact on overall reserves as a result of these changes was not material. This change represents a change in accounting estimate under ASC 250, Accounting Changes and Error Corrections, with prospective application.Other than the above, the accompanying unaudited interim consolidated financial statements have been prepared on a consistent basis with the accounting policies described in Consolidated Financial Statements and Supplementary Data — Note 2 — “Summary of Significant Accounting Policies” under Part II, Item 8 of our 2021 Form 10-K.