Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Summarized financial information of the reportable segments
Sales	$ 924,301	$ 995,709	$ 2,742,826	$ 2,871,517
Segment operating income	87,322	104,578	154,977	282,193
Operating Segments
Summarized financial information of the reportable segments
Sales	924,301	995,709	2,742,826	2,871,517
Segment operating income	117,412	134,704	260,900	376,774
Intersegment sales
Summarized financial information of the reportable segments
Sales	(1,128)	(1,014)	(3,990)	(3,965)
Segment operating income	(30,090)	(30,126)	(105,923)	(94,581)
FPD
Summarized financial information of the reportable segments
Sales	669,535	682,798	1,978,215	1,965,523
FPD | Operating Segments
Summarized financial information of the reportable segments
Sales	669,535	682,798	1,978,215	1,965,523
Segment operating income	86,660	85,461	186,740	242,085
FPD | Intersegment sales
Summarized financial information of the reportable segments
Sales	673	(52)	1,710	1,249
FCD
Summarized financial information of the reportable segments
Sales	254,766	312,911	764,611	905,994
FCD | Operating Segments
Summarized financial information of the reportable segments
Sales	254,766	312,911	764,611	905,994
Segment operating income	30,752	49,243	74,160	134,689
FCD | Intersegment sales
Summarized financial information of the reportable segments
Sales	455	1,066	2,280	2,716
Flowserve Pump Division and Flowserve Control Division | Intersegment sales
Summarized financial information of the reportable segments
Sales	$ 1,128	$ 1,014	$ 3,990	$ 3,965