Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 7.9	$ 15.0	$ 19.6	$ 25.2
Other comprehensive (loss) income, net of tax:
Currency translation	(2.5)	(10.3)	(1.8)	(6.2)
Pension and other postretirement benefits	0.4	0.0	5.7	1.4
Total other comprehensive (loss) income	(2.1)	(10.3)	3.9	(4.8)
Total comprehensive income, net of tax	5.8	4.7	23.5	20.4
Comprehensive income attributable to noncontrolling interests	(0.3)	(0.2)	(0.8)	(0.6)
Comprehensive income attributable to Park-Ohio Holdings Corp. common shareholders	$ 5.5	$ 4.5	$ 22.7	$ 19.8