Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss) attributable to ParkOhio common shareholders before noncontrolling interest	$ 29.1	$ 6.8	$ (12.9)
Other comprehensive (loss) income:
Currency translation	(15.9)	7.7	(19.9)
Pensions and other postretirement benefits, net of tax	7.8	10.4	(22.7)
Total other comprehensive (loss) income	(8.1)	18.1	(42.6)
Total comprehensive income (loss), net of tax	21.0	24.9	(55.5)
Comprehensive loss (income) attributable to noncontrolling interest	2.7	1.0	(1.3)
Comprehensive income (loss) attributable to ParkOhio common shareholders	$ 23.7	$ 25.9	$ (56.8)