Basis of Presentation and Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated balance sheet as of March 31, 2024 and December 31, 2023, and the related condensed consolidated statements of income, condensed consolidated statements of comprehensive income (loss), condensed consolidated statements of shareholders' equity for the three months ended March 31, 2024 and 2023 and condensed consolidated statements of cash flows for the three months ended March 31, 2024 and 2023 of Flowserve Corporation are unaudited. In management’s opinion, all adjustments comprising normal recurring adjustments necessary for fair statement of such condensed consolidated financial statements have been made. The accompanying condensed consolidated financial statements and notes in this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2024 ("Quarterly Report") are presented as permitted by Regulation S-X and do not contain certain information included in our annual financial statements and notes thereto. Accordingly, the accompanying condensed consolidated financial information should be read in conjunction with the audited consolidated financial statements presented in our Annual Report on Form 10-K for the year ended December 31, 2023 ("2023 Annual Report").
Terminated Acquisition	Terminated Acquisition — On February 9, 2023, the Company entered into a definitive agreement to acquire all of the outstanding equity of Velan Inc., a manufacturer of highly engineered industrial valves. In October 2023, the Company received notice that the required French foreign investment screening approval was not obtained. As a result, the transaction was terminated. Acquisition related expenses incurred during 2023 associated with the transaction were $7.3 million.
Accounting developments	Accounting Developments Pronouncements Implemented In September 2022, the FASB issued ASU No. 2022-04, "Liabilities—Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations." The amendments require a buyer that uses supplier finance programs to make annual disclosures about the program’s key terms, the balance sheet presentation of related amounts, the confirmed amount outstanding at the end of the period and associated roll-forward information. Only the amount outstanding at the end of the period must be disclosed in interim periods following the year of adoption. The amendments are effective for all entities for fiscal years beginning after December 15, 2022 on a retrospective basis, including interim periods within those fiscal years, except for the requirement to disclose roll-forward information, which is effective prospectively for fiscal years beginning after December 15, 2023. We adopted ASU No. 2022-04 effective January 1, 2023. We partner with two banks to offer our suppliers the option of participating in a supplier financing program and receive payment early. Under the program agreement, we must reimburse each bank for approved and valid invoices in accordance with the originally agreed upon terms with the supplier. We have no obligation for fees, subscription, service, commissions or otherwise with either bank. We also have no obligation for pledged assets or other forms of guarantee and may terminate either program agreement with appropriate notice. As of March 31, 2024, and December 31, 2023, $7.8 million and $13.5 million, respectively, remained outstanding with the supply chain financing partner banks and recorded within accounts payable on our condensed consolidated balance sheet. In March 2023, the FASB issued ASU No. 2023-01, "Leases (Topic 842): Common Control Arrangements." The amendments permits leasehold improvements to be amortized over the useful life of the asset when the lessee controls the use of the underlying asset and the lease is between common control entities. The amendments further allow entities to account for leasehold improvements as a transfer of assets between entities under common control through an equity adjustment when the lessee is no longer in control of the underlying asset. The amendments are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. The adoption of this ASU did not have a material impact on our condensed consolidated balance sheets, condensed consolidated statements of income or condensed consolidated statements of cash flows. In March 2023, the FASB issued ASU No. 2023-02, "Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method." The amendments allow companies to account for all of their tax equity investments using the proportional amortization method if certain conditions are met. Companies can elect to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than unilaterally or on an individual investment basis. The amendments are effective on either a modified retrospective or retrospective basis for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years, depending on whether the company elects to evaluate its investments for which it still expects to receive income tax credits or other income tax benefits as of the beginning of the period of adoption or at the beginning of the earliest period presented. The adoption of this ASU did not have a material impact on our condensed consolidated balance sheets, condensed consolidated statements of income or condensed consolidated statements of cash flows. Pronouncements Not Yet Implemented In August 2023, the FASB issued ASU No. 2023-05, "Business Combinations - Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement." The amendments require that newly formed joint ventures measure the net assets and liabilities contributed at fair value. Subsequent measurement is in accordance with the requirements for acquirers of a business in Sections 805-10-35, 805-20-35, and 805-30-35, and other generally accepted accounting principles. The amendments are effective prospectively for all joint venture formations with a formation date on or after January 1, 2025, but companies may elect to apply the amendments retrospectively to joint ventures formed prior to January 1, 2025, if it has sufficient information. Early adoption is permitted in any interim or annual period in which financial statements have not yet been issued (or made available for issuance), either prospectively or retrospectively. We do not expect the impact of this ASU to be material. In November 2023, the FASB issued ASU No. 2023-07, "Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures." The amendments enhance the disclosure requirements of significant segment expenses and other segment items. The amendments are effective for annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The amendments are to be applied retrospectively to all prior periods presented in the financial statements. Upon transition, the segment expense categories and amounts disclosed in the prior periods should be based on the significant segment expense categories identified and disclosed in the period of adoption. Early adoption is permitted. We are evaluating the impact of this ASU on our disclosures. In December 2023, the FASB issued ASU No. 2023-08, "Intangibles - Goodwill and Other - Crypto Assets (Subtopic 350-60)." The amendments require that assets that qualify as a crypto asset, in accordance with the new guidance, must be recorded and subsequently valued at fair value at each reporting period, recognizing changes within net income of the same period. The amendments also require that companies present crypto assets measured at fair value separately from other intangible assets on the balance sheet with changes related to the remeasurement of crypto assets reported separately from changes in carrying amounts of other intangible assets in the income statement. Specific disclosure is required around the activity of crypto assets during the reporting period. The amendments are effective for all entities for fiscal years beginning after December 15, 2024, including interim periods within those fiscal years. Early adoption is permitted. We do not own crypto assets, and therefore, do not expect the impact of this ASU to be material. In December 2023, the FASB issued ASU No. 2023-09, "Income Taxes (Topic 740)." The amendments require that entities on an annual basis disclose specific categories in the rate reconciliation, provide additional information for reconciling items that meet a quantitative threshold, and disclose specific information about income taxes paid. The amendments eliminate previously required disclosures around changes in unrecognized tax benefits and cumulative amounts of certain temporary difference. The amendments are effective prospectively for annual periods beginning after December 15, 2024. Early adoption is permitted. We are evaluating the impact of this ASU on our disclosures.
Fair Value	Fair ValueFair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Where available, fair value is based on observable market prices or parameters or derived from such prices or parameters. Where observable prices or inputs are not available, valuation models may be applied. Assets and liabilities recorded at fair value in our condensed consolidated balance sheets are categorized by hierarchical levels based upon the level of judgment associated with the inputs used to measure their fair values. Recurring fair value measurements are limited to investments in derivative instruments. The fair value measurements of our derivative instruments are determined using models that maximize the use of the observable market inputs including interest rate curves and both forward and spot prices for currencies, and are classified as Level II under the fair value hierarchy. The fair values of our derivatives are included in Note 5.

In September 2022, the FASB issued ASU No. 2022-04, "Liabilities—Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations." The amendments require a buyer that uses supplier finance programs to make annual disclosures about the program’s key terms, the balance sheet presentation of related amounts, the confirmed amount outstanding at the end of the period and associated roll-forward information. Only the amount outstanding at the end of the period must be disclosed in interim periods following the year of adoption. The amendments are effective for all entities for fiscal years beginning after December 15, 2022 on a retrospective basis, including interim periods within those fiscal years, except for the requirement to disclose roll-forward information, which is effective prospectively for fiscal years beginning after December 15, 2023.

We adopted ASU No. 2022-04 effective January 1, 2023. We partner with two banks to offer our suppliers the option of participating in a supplier financing program and receive payment early. Under the program agreement, we must reimburse each bank for approved and valid invoices in accordance with the originally agreed upon terms with the supplier. We have no obligation for fees, subscription, service, commissions or otherwise with either bank. We also have no obligation for pledged assets or other forms of guarantee and may terminate either program agreement with appropriate notice. As of March 31, 2024, and December 31, 2023, $7.8 million and $13.5 million, respectively, remained outstanding with the supply chain financing partner banks and recorded within accounts payable on our condensed consolidated balance sheet.

In March 2023, the FASB issued ASU No. 2023-01, "Leases (Topic 842): Common Control Arrangements." The amendments permits leasehold improvements to be amortized over the useful life of the asset when the lessee controls the use of the underlying asset and the lease is between common control entities. The amendments further allow entities to account for leasehold improvements as a transfer of assets between entities under common control through an equity adjustment when the lessee is no longer in control of the underlying asset. The amendments are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. The adoption of this ASU did not have a material impact on our condensed consolidated balance sheets, condensed consolidated statements of income or condensed consolidated statements of cash flows.

In March 2023, the FASB issued ASU No. 2023-02, "Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method." The amendments allow companies to account for all of their tax equity investments using the proportional amortization method if certain conditions are met. Companies can elect to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than unilaterally or on an individual investment basis. The amendments are effective on either a modified retrospective or retrospective basis for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years, depending on whether the company elects to evaluate its investments for which it still expects to receive income tax credits or other income tax benefits as of the beginning of the period of adoption or at the beginning of the earliest period presented. The adoption of this ASU did not have a material impact on our condensed consolidated balance sheets, condensed consolidated statements of income or condensed consolidated statements of cash flows.

In August 2023, the FASB issued ASU No. 2023-05, "Business Combinations - Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement." The amendments require that newly formed joint ventures measure the net assets and liabilities contributed at fair value. Subsequent measurement is in accordance with the requirements for acquirers of a business in Sections 805-10-35, 805-20-35, and 805-30-35, and other generally accepted accounting principles. The amendments are effective prospectively for all joint venture formations with a formation date on or after January 1, 2025, but companies may elect to apply the amendments retrospectively to joint ventures formed prior to January 1, 2025, if it has sufficient information. Early adoption is permitted in any interim or annual period in which financial statements have not yet been issued (or made available for issuance), either prospectively or retrospectively. We do not expect the impact of this ASU to be material.

In November 2023, the FASB issued ASU No. 2023-07, "Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures." The amendments enhance the disclosure requirements of significant segment expenses and other segment items. The amendments are effective for annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The amendments are to be applied retrospectively to all prior periods presented in the financial statements. Upon transition, the segment expense categories and amounts disclosed in the prior

In December 2023, the FASB issued ASU No. 2023-08, "Intangibles - Goodwill and Other - Crypto Assets (Subtopic 350-60)." The amendments require that assets that qualify as a crypto asset, in accordance with the new guidance, must be recorded and subsequently valued at fair value at each reporting period, recognizing changes within net income of the same period. The amendments also require that companies present crypto assets measured at fair value separately from other intangible assets on the balance sheet with changes related to the remeasurement of crypto assets reported separately from changes in carrying amounts of other intangible assets in the income statement. Specific disclosure is required around the activity of crypto assets during the reporting period. The amendments are effective for all entities for fiscal years beginning after December 15, 2024, including interim periods within those fiscal years. Early adoption is permitted. We do not own crypto assets, and therefore, do not expect the impact of this ASU to be material.

In December 2023, the FASB issued ASU No. 2023-09, "Income Taxes (Topic 740)." The amendments require that entities on an annual basis disclose specific categories in the rate reconciliation, provide additional information for reconciling items that meet a quantitative threshold, and disclose specific information about income taxes paid. The amendments eliminate previously required disclosures around changes in unrecognized tax benefits and cumulative amounts of certain temporary difference. The amendments are effective prospectively for annual periods beginning after December 15, 2024. Early adoption is permitted. We are evaluating the impact of this ASU on our disclosures.