Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 32.2	$ 48.7	$ 46.9
Other comprehensive income (loss):
Foreign currency translation adjustments	(13.9)	(11.8)	(7.9)
Pension and postretirement benefit adjustments, net of tax	1.2	(4.2)	(9.5)
Total other comprehensive (loss) income	(12.7)	(16.0)	(17.4)
Total comprehensive income, net of tax	19.5	32.7	29.5
Comprehensive income attributable to noncontrolling interest	(0.5)	(0.6)	(1.3)
Comprehensive income attributable to ParkOhio common shareholders	$ 19.0	$ 32.1	$ 28.2