Condensed Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]
Net sales	$ 317.8	$ 283.0	[1]
Cost of sales	261.8	231.4	[1]
Gross profit	56.0	51.6	[1]
Selling, general and administrative expenses	33.1	28.4	[1]
Operating income	22.9	23.2	[1]
Interest expense	7.0	6.5	[1]
Income from continuing operations before income taxes	15.9	16.7	[1]
Income tax expense	5.6	6.0	[1]
Net income from continuing operations	10.3	10.7	[1]
Loss from discontinued operations, net of taxes	0	(0.4)	[1]
Net income	10.3	10.3	[1]
Net income attributable to noncontrolling interest	(0.2)	0	[1]
Net income attributable to ParkOhio common shareholders	$ 10.1	$ 10.3	[1]
Earnings (loss) per common share attributable to ParkOhio common shareholders - Basic:
Continuing operations (in dollars per share)	$ 0.84	$ 0.90	[1]
Discontinued operations (in dollars per share)	$ 0.00	$ (0.03)	[1]
Total (in dollars per share)	$ 0.84	$ 0.87	[1]
Earnings (loss) per common share attributable to ParkOhio common shareholders - Diluted:
Continuing operations	$ 0.82	$ 0.88	[1]
Discontinued operations	$ 0.00	$ (0.03)	[1]
Total (in dollars per share)	$ 0.82	$ 0.85	[1]
Weighted-average shares used to compute earnings per share:
Basic (in shares)	12,023,453	11,862,406	[1]
Diluted (in shares)	12,331,020	12,132,868	[1]

[1] Adjusted to reflect the discontinued operations.