Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income attributable to ParkOhio common shareholders before noncontrolling interests	$ 20.0	$ 29.1	$ 6.8
Other comprehensive income (loss):
Currency translation	26.1	(15.9)	7.7
Pensions and other postretirement benefits, net of tax	3.7	7.8	10.4
Total other comprehensive income (loss)	29.8	(8.1)	18.1
Total comprehensive income, net of tax	49.8	21.0	24.9
Comprehensive loss attributable to noncontrolling interests	3.8	2.7	1.0
Comprehensive income attributable to ParkOhio common shareholders	$ 53.6	$ 23.7	$ 25.9