Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1.5	$ (5.5)	$ 7.8	$ (0.1)
Other comprehensive (loss) income, net of tax:
Currency translation	(14.6)	1.6	(18.5)	(2.7)
Foreign currency forward contracts	(0.2)	0.0	0.5	0.0
Pension and other postretirement benefits	0.0	0.2	0.1	0.4
Total other comprehensive (loss) income	(14.8)	1.8	(17.9)	(2.3)
Total comprehensive loss, net of tax	(13.3)	(3.7)	(10.1)	(2.4)
Comprehensive (income) loss attributable to noncontrolling interests	(0.5)	0.2	(0.7)	0.3
Comprehensive loss attributable to Park-Ohio Holdings Corp. common shareholders	$ (13.8)	$ (3.5)	$ (10.8)	$ (2.1)