Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2023	Apr. 25, 2023
Cover [Abstract]
Entity Central Index Key	0000030625
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
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 Blvd., Suite 700,
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
Title of 12(b) Security	Common Stock, $1.25 Par Value
Trading Symbol	FLS
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		131,149,159