Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 6.3	$ 5.4
Other comprehensive (loss) income, net of tax:
Currency translation	(3.9)	(4.3)
Foreign currency forward contracts	0.7	0.0
Pension and other postretirement benefits	0.1	0.2
Total other comprehensive loss	(3.1)	(4.1)
Total comprehensive income, net of tax	3.2	1.3
Comprehensive (income) loss attributable to noncontrolling interests	(0.2)	0.1
Comprehensive income attributable to Park-Ohio Holdings Corp. common shareholders	$ 3.0	$ 1.4