Nature of Business	9 Months Ended
Nature of Business	Jun. 30, 2022
Accounting Policies [Abstract]
Nature of Business	Nature of Business Fair Isaac Corporation Fair Isaac Corporation (NYSE: FICO) (together with its consolidated subsidiaries, the “Company,” which may also be referred to in this report as “we,” “us,” “our,” or “FICO”) is a leading applied analytics company. We were founded in 1956 on the premise that data, used intelligently, can improve business decisions. Today, FICO’s software and the widely used FICO® Score operationalize analytics, enabling thousands of businesses in nearly 120 countries to uncover new opportunities, make timely decisions that matter, and execute them at scale. Most leading banks and credit card issuers rely on our solutions, as do insurers, retailers, telecommunications providers, automotive companies, public agencies, and organizations in other industries. We also serve consumers through online services that enable people to access and understand their FICO Scores — the standard measure in the U.S. of consumer credit risk — empowering them to increase financial literacy and manage their financial health. Principles of Consolidation and Basis of Presentation We have prepared the accompanying unaudited interim condensed consolidated financial statements in accordance with the instructions to Form 10-Q and the applicable accounting guidance. Consequently, we have not necessarily included all information and footnotes required for audited financial statements. In our opinion, the accompanying unaudited interim condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments, except as otherwise indicated) necessary for a fair presentation of our financial position and results of operations. These unaudited condensed consolidated financial statements and notes thereto should be read in conjunction with our audited consolidated financial statements and notes thereto presented in our Annual Report on Form 10-K for the fiscal year ended September 30, 2021. The interim financial information contained in this report is not necessarily indicative of the results to be expected for any other interim period or for the entire fiscal year. The condensed consolidated financial statements include the accounts of FICO and its subsidiaries. All intercompany accounts and transactions have been eliminated. During the fourth quarter of fiscal 2021, we consolidated our operating segment structure from three to two by merging Applications and Decision Management Software segments into the new Software segment. As a result, we modified the presentation of our segment financial information with retrospective application to all prior periods presented. Refer to Note 18 - Segment Information to the consolidated financial statements included in Part II, Item 8 of our 2021 Annual Report on Form 10-K for further information. In addition, effective beginning in the fourth quarter of fiscal 2021, we changed the classification of revenue from transactional and maintenance, professional services, and license to on-premises and SaaS software, professional services and scores, which is reflected in our condensed consolidated statements of income and comprehensive income, as well as our disclosures on disaggregation of revenue, to better align with our business strategy. Previously reported amounts in the condensed consolidated statements of income and comprehensive income and notes to the condensed consolidated financial statements were adjusted to conform to the current presentation. Use of Estimates We make estimates and assumptions that affect the amounts reported in the financial statements and the disclosures made in the accompanying notes. For example, we use estimates in determining the appropriate levels of various accruals; variable considerations included in the transaction price and standalone selling price of each performance obligation for our customer contracts; labor hours in connection with fixed-fee service contracts; the amount of our tax provision; and the realizability of deferred tax assets. We also use estimates in determining the remaining economic lives and carrying values of acquired intangible assets, property and equipment, and other long-lived assets. In addition, we use assumptions to estimate the fair value of reporting units and share-based compensation. Actual results may differ from our estimates. As the impact of the COVID-19 pandemic continues to evolve, estimates and assumptions about future events and their effects cannot be determined with certainty and therefore require increased judgment. These estimates and assumptions may change in future periods and will be recognized in the condensed consolidated financial statements as new events occur and additional information becomes known. To the extent our actual results differ materially from those estimates and assumptions, our future financial statements could be affected. For more information, see Part II, Item 1A “Risk Factors” of this Quarterly Report on Form 10-Q. New Accounting Pronouncements Recent Accounting Pronouncements Not Yet Adopted In October 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2021-08, “Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers” (“ASU 2021-08”). ASU 2021-08 requires an acquirer in a business combination to recognize and measure contract assets and contract liabilities from acquired contracts using the revenue recognition guidance under Accounting Standards Codification Topic 606, Revenue from Contacts with Customers, in order to align the recognition of a contract liability with the definition of a performance obligation. The standard is effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, which means that it will be effective for our fiscal year beginning October 1, 2023. Early adoption is permitted. We do not believe that adoption of ASU 2021-08 will have a significant impact on our condensed consolidated financial statements. We do not expect that any other recently issued accounting pronouncements will have a significant effect on our financial statements.