Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		803,251
Net earnings (loss) of Flowserve Corporation	$ 47,605	$ (15,841)	$ 108,534	$ 72,398
Dividends on restricted shares not expected to vest	0	0	0	5
Earnings (loss) attributable to common and participating shareholders	$ 47,605	$ (15,841)	$ 108,534	$ 72,403
Weighted average shares:
Common stock	130,681,000	130,299,000	130,574,000	130,087,000
Participating securities	79,000	0	111,000	298,000
Denominator for basic earnings per common share	130,760,000	130,299,000	130,685,000	130,385,000
Effect of potentially dilutive securities	636,000	0	653,000	522,000
Denominator for diluted earnings per common share	131,396,000	130,299,000	131,338,000	130,907,000
Earnings (loss) per common share:
Basic (in dollars per share)	$ 0.36	$ (0.12)	$ 0.83	$ 0.56
Diluted (in dollars per share)	$ 0.36	$ (0.12)	$ 0.83	$ 0.55