Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Summarized financial information of the reportable segments
Sales	$ 996,544	$ 952,716	$ 2,876,679	$ 2,845,798
Segment operating income	109,560	62,191	298,809	154,327
Operating Segments
Summarized financial information of the reportable segments
Sales	996,544	952,716	2,876,679	2,845,798
Segment operating income	135,507	112,910	382,713	259,501
Intersegment sales
Summarized financial information of the reportable segments
Sales	(1,014)	(1,428)	(3,965)	(4,928)
Segment operating income	(25,947)	(50,719)	(83,904)	(105,174)
FPD
Summarized financial information of the reportable segments
Sales	682,798	647,298	1,965,523	1,958,806
FPD | Operating Segments
Summarized financial information of the reportable segments
Sales	682,798	647,298	1,965,523	1,958,806
Segment operating income	85,461	56,480	242,085	122,760
FPD | Intersegment sales
Summarized financial information of the reportable segments
Sales	(52)	667	1,249	2,038
FCD
Summarized financial information of the reportable segments
Sales	313,746	305,418	911,156	886,992
FCD | Operating Segments
Summarized financial information of the reportable segments
Sales	313,746	305,418	911,156	886,992
Segment operating income	50,046	56,430	140,628	136,741
FCD | Intersegment sales
Summarized financial information of the reportable segments
Sales	1,066	761	2,716	2,890
Flowserve Pump Division and Flowserve Control Division | Intersegment sales
Summarized financial information of the reportable segments
Sales	$ 1,014	$ 1,428	$ 3,965	$ 4,928