Summary of Business and Significant Accounting Policies	9 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Business and Significant Accounting Policies	Summary of Business and Significant Accounting Policies Organizational Structure American Honda Finance Corporation (AHFC) is a wholly-owned subsidiary of American Honda Motor Co., Inc. (AHM or the Parent). Honda Canada Finance Inc. (HCFI) is a majority-owned subsidiary of AHFC. Noncontrolling interest in HCFI is held by Honda Canada Inc. (HCI), an affiliate of AHFC. AHM is a wholly-owned subsidiary and HCI is an indirect wholly-owned subsidiary of Honda Motor Co., Ltd. (HMC). AHM and HCI are the sole authorized distributors of Honda and Acura products, including motor vehicles, other products, and parts and accessories, in the United States and Canada. Unless otherwise indicated by the context, all references to the “Company”, “we”, “us”, and “our” in this report include AHFC and its consolidated subsidiaries, and references to “AHFC” refer solely to American Honda Finance Corporation (excluding AHFC’s subsidiaries). Basis of Presentation The unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim information, and instructions to the Quarterly Report on Form 10-Q and Rule 10-01 of Regulation S-X. In the opinion of management, these unaudited interim financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results for the interim periods presented. Results for interim periods should not be considered indicative of results for the full year or for any other interim period. These unaudited interim financial statements should be read in conjunction with the Company’s audited consolidated financial statements, significant accounting policies, and the other notes to the consolidated financial statements for the fiscal year ended March 31, 2025 included in the Company’s Annual Report on Form 10-K, which was filed with the Securities and Exchange Commission (SEC) on June 18, 2025. All significant intercompany balances and transactions have been eliminated upon consolidation. Recently Issued Accounting Standards In December 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments are intended to enhance the transparency and decision-usefulness of income tax disclosures, including jurisdictional information, by requiring consistent categories and greater disaggregation of information in the rate reconciliation and income taxes paid disclosures. The amendments also eliminate certain disclosure requirements related to uncertain tax positions and unrecognized deferred tax liabilities. The amendments are effective for the Company for fiscal years beginning April 1, 2025. Aside from the additional disclosure requirements, the adoption of the amendments is not expected to materially impact the Company's consolidated financial statements. In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments address investor requests for more transparent information. The primary goal is to improve the decision-usefulness of expense information on public business entities’ income statements through the disaggregation of relevant expense captions in the notes to the financial statements. The amendments are effective for the Company for fiscal years beginning April 1, 2027 and for interim periods beginning April 1, 2028. The Company is currently assessing the impact of this standard on the consolidated financial statements. All other ASUs issued but not adopted were assessed and determined to be not applicable or are not expected to have a material impact on the Company's consolidated financial statements or financial statement disclosures.

American Honda Finance Corporation (AHFC) is a wholly-owned subsidiary of American Honda Motor Co., Inc. (AHM or the Parent). Honda Canada Finance Inc. (HCFI) is a majority-owned subsidiary of AHFC. Noncontrolling interest in HCFI is held by Honda Canada Inc. (HCI), an affiliate of AHFC. AHM is a wholly-owned subsidiary and HCI is an indirect wholly-owned subsidiary of Honda Motor Co., Ltd. (HMC). AHM and HCI are the sole authorized distributors of Honda and Acura products, including motor vehicles, other products, and parts and accessories, in the United States and Canada.

Unless otherwise indicated by the context, all references to the “Company”, “we”, “us”, and “our” in this report include AHFC and its consolidated subsidiaries, and references to “AHFC” refer solely to American Honda Finance Corporation (excluding AHFC’s subsidiaries).

The unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim information, and instructions to the Quarterly Report on Form 10-Q and Rule 10-01 of Regulation S-X. In the opinion of management, these unaudited interim financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results for the interim periods presented. Results for interim periods should not be considered indicative of results for the full year or for any other interim period. These unaudited interim financial statements should be read in conjunction with the Company’s audited consolidated financial statements, significant accounting policies, and the other notes to the consolidated financial statements for the fiscal year ended March 31, 2025 included in the Company’s Annual Report on Form 10-K, which was filed with the Securities and Exchange Commission (SEC) on June 18, 2025. All significant intercompany balances and transactions have been eliminated upon consolidation.

In December 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments are intended to enhance the transparency and decision-usefulness of income tax disclosures, including jurisdictional information, by requiring consistent categories and greater disaggregation of information in the rate reconciliation and income taxes paid disclosures. The amendments also eliminate certain disclosure requirements related to uncertain tax positions and unrecognized deferred tax liabilities. The amendments are effective for the Company for fiscal years beginning April 1, 2025. Aside from the additional disclosure requirements, the adoption of the amendments is not expected to materially impact the Company's consolidated financial statements.

In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments address investor requests for more transparent information. The primary goal is to improve the decision-usefulness of expense information on public business entities’ income statements through the disaggregation of relevant expense captions in the notes to the financial statements. The amendments are effective for the Company for fiscal years beginning April 1, 2027 and for interim periods beginning April 1, 2028. The Company is currently assessing the impact of this standard on the consolidated financial statements.