Revision to Previously Reported Financial Information - Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings	$ 59,616	$ 136,182	$ 140,875	$ 246,940
Foreign currency translation adjustments, net of taxes	42,273	524	(15,185)	6,561
Other comprehensive loss, net of tax	25,665	44,734	(24,564)	(9,766)
Comprehensive income (loss), including noncontrolling interests	85,281	180,916	116,311	237,174
Comprehensive income (loss) attributable to Flowserve Corporation	81,718	$ 171,986	105,086	$ 228,483
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings	60,458		126,781
Foreign currency translation adjustments, net of taxes	41,411		388
Other comprehensive loss, net of tax	24,803		(8,991)
Comprehensive income (loss), including noncontrolling interests	85,261		117,790
Comprehensive income (loss) attributable to Flowserve Corporation	81,698		106,565
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings	(842)		14,094
Foreign currency translation adjustments, net of taxes	862		(15,573)
Other comprehensive loss, net of tax	862		(15,573)
Comprehensive income (loss), including noncontrolling interests	20		(1,479)
Comprehensive income (loss) attributable to Flowserve Corporation	$ 20		$ (1,479)