Consolidated Statements of Income (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Income Statement [Abstract]
Net sales	$ 1,203.2	[1]	$ 1,128.2	[1]	$ 961.4	[1]
Cost of sales	992.2		920.9	[1]	793.7	[1]
Gross profit	211.0		207.3	[1]	167.7	[1]
Selling, general and administrative expenses	119.3		113.4	[1]	102.2	[1]
Restructuring and asset impairment charges	0	[1]	0	[1]	5.4	[1]
Litigation judgment and settlement costs	5.2	[1]	13.0	[1]	0	[1]
Operating income	86.5		80.9	[1]	60.1	[1]
Gain on acquisition of business	(0.6)	[1]	0	[1]	0	[1]
Interest expense	26.8	[1]	26.4	[1]	32.2	[1]
Income from continuing operations before income taxes	60.3	[1]	54.5	[1]	27.9	[1]
Income tax expense (benefit)	19.4		20.3	[1]	(3.8)	[1]
Net income from continuing operations	40.9		34.2	[1]	31.7	[1]
Income (loss) from discontinued operations, net of taxes	3.0		(2.4)	[1]	(2.3)	[1]
Net income	43.9		31.8	[1]	29.4	[1]
Net income attributable to noncontrolling interest	(0.5)		0	[1]	0	[1]
Net income attributable to ParkOhio common shareholders	$ 43.4		$ 31.8	[1]	$ 29.4	[1]
Earnings (loss) per common share attributable to ParkOhio common shareholders - Basic:
Continuing operations (in dollars per share)	$ 3.40		$ 2.87	[1]	$ 2.74	[1]
Discontinued operations (in dollars per share)	$ 0.25		$ (0.20)	[1]	$ (0.20)	[1]
Total (in dollars per share)	$ 3.65		$ 2.67	[1]	$ 2.54	[1]
Earnings (loss) per common share attributable to ParkOhio common shareholders - Diluted:
Continuing operations (in dollars per share)	$ 3.31		$ 2.82	[1]	$ 2.64	[1]
Discontinued operations (in dollars per share)	$ 0.25		$ (0.20)	[1]	$ (0.19)	[1]
Total (in dollars per share)	$ 3.56		$ 2.62	[1]	$ 2.45	[1]
Weighted-average shares used to compute earnings per share:
Basic (in shares)	11,936,772		11,920,593	[1]	11,579,819	[1]
Diluted (in shares)	12,232,165		12,116,429	[1]	11,998,861	[1]

[1] Adjusted to reflect the discontinued operations.