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Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2019
Feb. 12, 2020
Jun. 28, 2019
Entity Listings [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 1-13179    
Entity Registrant Name FLOWSERVE CORP    
Entity Incorporation, State or Country Code NY    
Entity Tax Identification Number 31-0267900    
Entity Address, Address Line One 5215 N. O'Connor Boulevard Suite 2300,    
Entity Address, City or Town Irving,    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 75039    
City Area Code 972    
Local Phone Number 443-6500    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth false    
Entity Shell Company false    
Entity Public Float     $ 3,069,855,077
Entity Common Stock, Shares Outstanding   130,901,014  
Documents Incorporated by Reference
Certain information contained in the definitive proxy statement for the registrant’s 2020 Annual Meeting of Shareholders scheduled to be held on May 21, 2020 is incorporated by reference into Part III hereof.
    
Entity Central Index Key 0000030625    
Amendment Flag false    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Common Stock      
Entity Listings [Line Items]      
Title of 12(b) Security Common Stock, $1.25 Par Value    
Trading Symbol FLS    
Security Exchange Name NYSE    
2022 Senior notes      
Entity Listings [Line Items]      
Title of 12(b) Security 1.25% Senior Notes due 2022    
Trading Symbol FLS22A    
Security Exchange Name NYSE