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Basis of Presentation and Responsibility for interim Financial Statements (Policies)	9 Months Ended
	Sep. 29, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation	Basis of Presentation and Responsibility for interim Financial Statements We prepared the accompanying unaudited condensed consolidated financial statements of Luxfer Holdings PLC and all wholly-owned, majority owned or otherwise controlled subsidiaries on the same basis as our annual audited financial statements. We condensed or omitted certain information and footnote disclosures normally included in our annual audited financial statements, which we prepared in accordance with U.S. Generally Accepted Accounting Principles (GAAP). Our quarterly financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2023. As used in this report, the terms "we," "us," "our," "Luxfer" and "the Company" mean Luxfer Holdings PLC and its subsidiaries, unless the context indicates another meaning. In the opinion of management, our financial statements reflect all adjustments, which are only of a normal recurring nature, necessary for the fair statement of financial statements for interim periods in accordance with U.S. GAAP and with the instructions to Form 10-Q in Article 10 of Securities and Exchange Commission (SEC) Regulation S-X. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions about future events that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of our financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates, and any such differences may be material to our financial statements.
Fiscal year	Our fiscal year ends on December 31. We report our interim quarterly periods on a 13-week quarter basis, ending on a Sunday. The third quarter 2024, ended on September 29, 2024, and the third quarter 2023, ended on October 1, 2023.
Accounting standards issued but not yet effective	Accounting standards issued but not yet effective In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, to improve reportable segment disclosure requirements. The new guidance requires disclosure of significant segment expenses that are regularly provided to the chief operating decision maker and included in the reported measure of segment profit or loss. It does not change the definition of a segment or the guidance for determining reportable segments. The new guidance is effective for the Company in the annual period beginning January 1, 2024 and in 2025 for interim periods. Adoption of this ASU will result in additional disclosure, but it will not impact the Company’s consolidated financial position, results of operations or cash flows. In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Improvements to Income Tax Disclosures, which enhances the transparency of income tax disclosures in ASC 740, Income Taxes, primarily related to rate reconciliation and income taxes paid information. The ASU is effective for fiscal years beginning after December 15, 2024 and early adoption is permitted. The Company is currently assessing the impact on its Consolidated Condensed Financial Statements and related disclosures.

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Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481231/810-10-45-12

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