Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 13.8	$ 13.2	$ 25.5	$ 36.9
Other comprehensive income:
Foreign currency translation loss	(1.3)	(0.9)	(5.3)	(3.5)
Pension and other postretirement benefit adjustments, net of tax	0.3	0.1	0.7	0.4
Total other comprehensive loss	(1.0)	(0.8)	(4.6)	(3.1)
Total comprehensive income, net of tax	12.8	12.4	20.9	33.8
Comprehensive income attributable to noncontrolling interest	(0.3)	0.0	(0.3)	(0.5)
Comprehensive income attributable to ParkOhio common shareholders	$ 12.5	$ 12.4	$ 20.6	$ 33.3