Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 223,858	$ 63,349	$ 391,539	$ 217,716
Other comprehensive income (loss):
Foreign currency translation adjustments, net of taxes	(16,916)	52,872	142,314	197
Pension and other postretirement effects, net of taxes	2,987	(2,221)	2,022	(26)
Cash flow hedging activity, net of taxes	25	23	73	42
Other comprehensive income (loss):	(13,904)	50,674	144,409	213
Comprehensive income including noncontrolling interests	209,954	114,023	535,948	217,929
Comprehensive (income) loss attributable to noncontrolling interests	28,388	(4,966)	16,273	(12,212)
Comprehensive income attributable to Flowserve Corporation	$ 238,342	$ 109,057	$ 552,221	$ 205,717