Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2026
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited Consolidated Interim Financial Statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission ("SEC") applicable to interim financial statements. While these statements reflect all normal recurring adjustments that are, in the opinion of management, necessary for fair presentation of the results of the interim period, they do not include all of the information and footnotes required by United States generally accepted accounting principles (“GAAP”) for complete financial statements. The unaudited Consolidated Interim Financial Statements should therefore be read in conjunction with the Consolidated Financial Statements and accompanying notes for the year ended December 31, 2025 included in our Annual Report on Form 10-K, as filed with the SEC on February 19, 2026 (our “2025 Form 10-K”). The results of operations and cash flows for the three months ended March 31, 2026 should not necessarily be taken as indicative of the entire year. All amounts presented are in millions, except per share amounts. We evaluate segment reporting in accordance with ASC 280, Segment Reporting. We concluded that Garrett operates in a single operating segment and a single reportable segment based on the operating results available and evaluated regularly by the chief operating decision maker (“CODM”), which is our Chief Executive Officer, to make decisions about resource allocation and performance assessment. The CODM makes operational performance assessments and resource allocation decisions on a consolidated basis, inclusive of all of the Company’s products across channels and geographies. The preparation of the financial statements in conformity with GAAP requires management to make estimates that affect the reported amounts of assets and liabilities and 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. Management bases these estimates on assumptions that it believes to be reasonable under the circumstances. Actual results could differ from the original estimates, requiring adjustments to these balances in future periods.
Accounting Standards Issued But Not Yet Adopted	Accounting Standards Issued But Not Yet Adopted 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 in this update require disclosure of specified information about certain costs and expenses. In January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date. The guidance, as clarified by ASU 2025-01, is effective for fiscal years beginning after December 15, 2026 on a prospective basis, with early adoption permitted. The Company is currently evaluating the guidance to determine the impact on its disclosures. In September 2025, FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendments revise the capitalization criteria for internal-use software costs and eliminate stage-based development guidance. The update is effective for fiscal years beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the guidance to determine the impact on its accounting policies and disclosures. In December 2025, the FASB issued ASU 2025-10, Government Grants (Topic 832): Accounting for Government Grants Received by Business Entities. The amendments in this update establish the accounting for a government grant received by a business entity. The guidance is effective for fiscal years beginning after December 15, 2029, with early adoption permitted. The Company is currently evaluating the guidance to determine the impact on its accounting policies and disclosures. There are no other recently issued, but not yet adopted, accounting pronouncements that are expected to have a material impact on the Company's Consolidated Interim Financial Statements and related disclosures.

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2026

The accompanying unaudited Consolidated Interim Financial Statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission ("SEC") applicable to interim financial statements. While these statements reflect all normal recurring adjustments that are, in the opinion of management, necessary for fair presentation of the results of the interim period, they do not include all of the information and footnotes required by United States generally accepted accounting principles (“GAAP”) for complete financial statements. The unaudited Consolidated Interim Financial Statements should therefore be read in conjunction with the Consolidated Financial Statements and accompanying notes for the year ended December 31, 2025 included in our Annual Report on Form 10-K, as filed with the SEC on February 19, 2026 (our “2025 Form 10-K”). The results of operations and cash flows for the three months ended March 31, 2026 should not necessarily be taken as indicative of the entire year. All amounts presented are in millions, except per share amounts.

We evaluate segment reporting in accordance with ASC 280, Segment Reporting. We concluded that Garrett operates in a single operating segment and a single reportable segment based on the operating results available and evaluated regularly by the chief operating decision maker (“CODM”), which is our Chief Executive Officer, to make decisions about resource allocation and performance assessment. The CODM makes operational performance assessments and resource allocation decisions on a consolidated basis, inclusive of all of the Company’s products across channels and geographies.

The preparation of the financial statements in conformity with GAAP requires management to make estimates that affect the reported amounts of assets and liabilities and 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. Management bases these estimates on assumptions that it believes to be reasonable under the circumstances. Actual results could differ from the original estimates, requiring adjustments to these balances in future periods.

Accounting Standards Issued But Not Yet Adopted

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 in this update require disclosure of specified information about certain costs and expenses. In January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date. The guidance, as clarified by ASU 2025-01, is effective for fiscal years beginning after December 15, 2026 on a prospective basis, with early adoption permitted. The Company is currently evaluating the guidance to determine the impact on its disclosures.

In September 2025, FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendments revise the capitalization

criteria for internal-use software costs and eliminate stage-based development guidance. The update is effective for fiscal years beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the guidance to determine the impact on its accounting policies and disclosures.

In December 2025, the FASB issued ASU 2025-10, Government Grants (Topic 832): Accounting for Government Grants Received by Business Entities. The amendments in this update establish the accounting for a government grant received by a business entity. The guidance is effective for fiscal years beginning after December 15, 2029, with early adoption permitted. The Company is currently evaluating the guidance to determine the impact on its accounting policies and disclosures.

There are no other recently issued, but not yet adopted, accounting pronouncements that are expected to have a material impact on the Company's Consolidated Interim Financial Statements and related disclosures.