Consolidated Statements of Income (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 1,378.7	$ 1,203.2	$ 1,128.2
Cost of sales	1,144.2	992.2	920.9
Gross profit	234.5	211.0	207.3
Selling, general and administrative expenses	136.6	120.2	113.8
Litigation judgment and settlement costs	0	5.2	13.0
Operating income	97.9	85.6	80.5
Gain on acquisition of business	0	(0.6)	0
Interest expense	26.1	25.9	26.0
Income from continuing operations before income taxes	71.8	60.3	54.5
Income tax expense	24.9	19.4	20.3
Net income from continuing operations	46.9	40.9	34.2
Income (loss) from discontinued operations, net of taxes	0	3.0	(2.4)
Net income	46.9	43.9	31.8
Net income attributable to noncontrolling interest	(1.3)	(0.5)	0
Net income attributable to ParkOhio common shareholders	$ 45.6	$ 43.4	$ 31.8
Earnings (loss) per common share attributable to ParkOhio common shareholders - Basic:
Continuing operations (in dollars per share)	$ 3.77	$ 3.40	$ 2.87
Discontinued operations (in dollars per share)	$ 0.00	$ 0.25	$ (0.20)
Total (in dollars per share)	$ 3.77	$ 3.65	$ 2.67
Earnings (loss) per common share attributable to ParkOhio common shareholders - Diluted:
Continuing operations (in dollars per share)	$ 3.68	$ 3.31	$ 2.82
Discontinued operations (in dollars per share)	$ 0.00	$ 0.25	$ (0.20)
Total (in dollars per share)	$ 3.68	$ 3.56	$ 2.62
Weighted-average shares used to compute earnings per share:
Basic (in shares)	12,097,018	11,936,772	11,920,593
Diluted (in shares)	12,376,076	12,232,165	12,116,429
Dividend per common share (in dollars per share)	$ 0.375	$ 0	$ 0