Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income attributable to Park-Ohio Holdings Corp. common shareholders before noncontrolling interest	$ 4.9	$ 1.5	$ 10.8	$ 7.8
Other comprehensive income (loss), net of tax:
Currency translation	2.2	(14.6)	5.5	(18.5)
Foreign currency forward contracts	(0.2)	(0.2)	(0.4)	0.5
Pension and other postretirement benefits	0.9	0.0	2.9	0.1
Total other comprehensive income (loss)	2.9	(14.8)	8.0	(17.9)
Total comprehensive income (loss), net of tax	7.8	(13.3)	18.8	(10.1)
Comprehensive loss (income) attributable to noncontrolling interests	0.5	(0.5)	0.4	(0.7)
Comprehensive income (loss) attributable to Park-Ohio Holdings Corp. common shareholders	$ 8.3	$ (13.8)	$ 19.2	$ (10.8)