Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 10.1	$ 2.7
Other comprehensive income:
Foreign currency translation adjustment	3.9	2.6
Pension and other postretirement benefit adjustments, net of tax	0.2	0.2
Total other comprehensive income	4.1	2.8
Total comprehensive income, net of tax	14.2	5.5
Comprehensive income attributable to noncontrolling interests	(0.3)	0.0
Comprehensive income attributable to ParkOhio common shareholders	$ 13.9	$ 5.5