Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (26.0)	$ (4.8)	$ 39.7
Other comprehensive (loss) income:
Currency translation	(10.0)	14.1	(1.1)
Pensions and other postretirement benefits, net of tax	8.9	4.8	5.0
Total other comprehensive (loss) income	(1.1)	18.9	3.9
Total comprehensive (loss) income, net of tax	(27.1)	14.1	43.6
Comprehensive loss (income) attributable to noncontrolling interest	1.2	0.3	(1.1)
Comprehensive (loss) income attributable to ParkOhio common shareholders	$ (25.9)	$ 14.4	$ 42.5