Condensed Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net sales	$ 374.7us-gaap_SalesRevenueNet	$ 317.8us-gaap_SalesRevenueNet
Cost of sales	316.3us-gaap_CostOfGoodsAndServicesSold	261.8us-gaap_CostOfGoodsAndServicesSold
Gross profit	58.4us-gaap_GrossProfit	56.0us-gaap_GrossProfit
Selling, general and administrative expenses	34.1	33.8
Operating income	24.3us-gaap_OperatingIncomeLoss	22.2us-gaap_OperatingIncomeLoss
Interest expense	6.8us-gaap_InterestExpense	6.3us-gaap_InterestExpense
Income before income taxes	17.5	15.9
Income tax expense	6.4us-gaap_IncomeTaxExpenseBenefit	5.6us-gaap_IncomeTaxExpenseBenefit
Net income	11.1us-gaap_ProfitLoss	10.3us-gaap_ProfitLoss
Net income attributable to noncontrolling interest	(0.3)	(0.2)
Net income attributable to ParkOhio common shareholders	$ 10.8us-gaap_NetIncomeLoss	$ 10.1us-gaap_NetIncomeLoss
Earnings per common share attributable to ParkOhio common shareholders:
Basic (in dollars per share)	$ 0.89	$ 0.84
Diluted (in dollars per share)	$ 0.87	$ 0.82
Weighted-average shares used to compute earnings per share:
Basic (in shares)	12,165,884	12,023,453
Diluted (in shares)	12,423,458	12,331,020
Dividend per common share (in dollars per share)	$ 0.125	$ 0

Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770