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Basis of Presentation (Policies) | 3 Months Ended
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Dec. 28, 2024
Accounting Policies [Abstract] |
Basis of Presentation | Basis of Presentation The accompanying Condensed Consolidated Financial Statements included herein have been prepared by Plexus Corp. and its subsidiaries (together “Plexus” or the “Company”) without audit and pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (“SEC”). The accompanying Condensed Consolidated Financial Statements reflect all adjustments, which include normal recurring adjustments necessary for the fair statement of the condensed consolidated financial position of the Company as of December 28, 2024 and September 28, 2024, the results of operations and shareholders' equity for the three months ended December 28, 2024 and December 30, 2023, and the cash flows for the same three month periods. The Company’s fiscal year ends on the Saturday closest to September 30. The Company also uses a "4-4-5" weekly accounting system for the interim periods in each quarter. Each quarter, therefore, ends on a Saturday at the end of the 4-4-5 period. Periodically, an additional week must be added to the fiscal year to re-align with the Saturday closest to September 30. All fiscal quarters presented herein included 13 weeks. Certain information and footnote disclosures, normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"), have been condensed or omitted pursuant to the SEC’s rules and regulations dealing with interim financial statements. However, the Company believes that the disclosures made in the Condensed Consolidated Financial Statements included herein are adequate to make the information presented not misleading. It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s 2024 Annual Report on Form 10-K. The preparation of financial statements requires management to make estimates and assumptions that affect the amounts reported in the Condensed Consolidated Financial Statements and notes thereto. The full extent to which current global events and economic conditions will impact the Company's business and operating results will depend on future developments that are highly uncertain and cannot be accurately predicted. The Company has considered information available as of the date of issuance of these financial statements and is not aware of any specific events or circumstances that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities. These estimates may change as new events occur and additional information becomes available. Actual results could differ materially from these estimates. In the first quarter of fiscal 2025, the Company changed internal management reporting to focus on value-add sales in each region and adjusted the allocation of certain corporate costs among reportable segments. These changes have been implemented and are consistent with what is provided to the Chief Operating Decision Maker ("CODM"). The Company's composition of operating segments and reportable segments did not change. Net sales and operating income for the three reportable segments for the current period and comparative periods presented have been recast to conform to those changes. These changes had no effect on the Company's consolidated net sales, operating income or net income for the current or comparative periods.
Recently Issued Accounting Pronouncements Not Yet Adopted | Recently Issued Accounting Pronouncements Not Yet Adopted: In November 2023, the FASB issued ASU 2023-07 Segment Reporting (Topic 280), which requires enhanced disclosures for segment reporting. Early adoption is permitted. The Company expects the new guidance will have an immaterial impact on its consolidated financial statements, and intends to adopt the guidance retrospectively when it becomes effective in the fourth quarter of fiscal 2025. In December 2023, the FASB issued ASU 2023-09 Income Taxes (Topic 740), which requires enhanced disclosures for income taxes. Early adoption is permitted. The Company expects the new guidance will have an immaterial impact on its consolidated financial statements, and intends to adopt the guidance prospectively when it becomes effective in the first quarter of fiscal 2026. In March 2024, the SEC adopted final rules to require registrants to disclose certain climate-related information in registration statements and annual reports. The SEC stayed its climate disclosure rules to facilitate the orderly judicial resolution of pending legal challenges. The Company is currently evaluating the impacts that the SEC's rule will have on its financial statement disclosures. In November 2024, the FASB issued ASU 2024-03 Disaggregation of Income Statement Expense (Subtopic 220-40), which requires disaggregated information about certain income statement expense line items. The guidance is effective for the Company beginning in fiscal 2028. Early adoption is permitted. The Company is currently evaluating the impact that the updated standard will have on its financial statement disclosures. The Company does not believe that any other recently issued accounting standards will have a material impact on its Consolidated Financial Statements or apply to its operations.
Fair Value of Financial Instruments | Fair Value Measurements: Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (or exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The Company uses quoted market prices when available or discounted cash flows to calculate fair value. The accounting guidance establishes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. The input levels are: Level 1: Quoted (observable) market prices in active markets for identical assets or liabilities. Level 2: Inputs other than Level 1 that are observable, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability. Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability.

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- Definition 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). + References No definition available. + Details
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