Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Earnings Per Share [Abstract]
Net earnings attributable to Flowserve Corporation	$ 73,905	$ 74,220
Dividends on restricted shares not expected to vest	0	0
Earnings attributable to common and participating shareholders	$ 73,905	$ 74,220
Weighted average shares:
Common stock (in shares)	131,534,000	131,464,000
Participating securities (in shares)	32,000	46,000
Denominator for basic earnings per common share (in shares)	131,566,000	131,510,000
Effect of potentially dilutive securities (in shares)	1,104,000	858,000
Denominator for diluted earnings per common share (in shares)	132,670,000	132,368,000
Earnings per common share:
Basic (in dollars per share)	$ 0.56	$ 0.56
Diluted (in dollars per share)	$ 0.56	$ 0.56