Basis of Presentation and Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated balance sheet as of March 31, 2023 and December 31, 2022, 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, 2023 and 2022 and condensed consolidated statements of cash flows for the three months ended March 31, 2023 and 2022 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. Prior period information has been updated to conform to current year presentation. The accompanying condensed consolidated financial statements and notes in this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2023 ("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, 2022 ("2022 Annual Report").
Accounting developments	Accounting Developments Pronouncements Implemented In October 2021, the FASB issued ASU No. 2021-08, "Accounting for Contract Assets and Contract Liabilities from Contracts with Customers." The amendments in this ASU improve comparability for both the recognition and measurement of acquired revenue contracts with customers at the date of and after a business combination. The amendments are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years and should be applied prospectively to business combinations occurring on or after the effective date of the amendments. 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 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. Flowserve partners with two banks to offer our suppliers the option of participating in a supplier financing program and receive payment early. Under the program agreement, Flowserve must reimburse each bank for approved and valid invoices in accordance with the originally agreed upon terms with the supplier. Flowserve has no obligation for fees; subscription, service, commissions or otherwise with either bank. Flowserve also has no obligation for pledged assets or other forms of guarantee and may terminate either program agreement with appropriate notice. As of March 31, 2023, $9.2 million remained outstanding with the supply chain financing partner banks and recorded within accounts payable on our condensed consolidated balance sheet. Pronouncements Not Yet Implemented 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. We do not expect the impact of this ASU to be material. 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 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. We do not expect the impact of this ASU to be material.
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.