Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Net sales	$ 1,659.7	$ 1,492.9	$ 1,277.0
Cost of sales	1,388.3	1,282.4	1,099.1
Selling, general and administrative expenses	181.5	162.2	155.9
Restructuring and other special charges	6.6	17.3	20.4
Gains on sales of assets, net	(0.8)	(2.4)	(14.7)
Operating income	84.1	33.4	16.3
Other components of pension and other postretirement benefits income, net	2.5	11.1	9.7
Interest expense, net	(45.1)	(33.8)	(27.1)
Income (loss) from continuing operations before income taxes	41.5	10.7	(1.1)
Income tax (expense) benefit	(8.5)	0.7	1.0
Income (loss) from continuing operations	33.0	11.4	(0.1)
Loss (income) attributable to noncontrolling interest	1.0	(1.3)	1.2
Income from continuing operations attributable to ParkOhio common shareholders	34.0	10.1	1.1
Loss from discontinued operations, net of tax (Note 4)	(26.2)	(24.3)	(25.9)
Net income (loss) attributable to ParkOhio common shareholders	$ 7.8	$ (14.2)	$ (24.8)
Basic:
Continuing operations (in dollars per share)	$ 2.76	$ 0.83	$ 0.09
Discontinued Operations (in dollars per share)	(2.13)	(2.00)	(2.16)
Total (in dollars per share)	0.63	(1.17)	(2.07)
Diluted:
Continuing operations (in dollars per share)	2.72	0.83	0.09
Discontinued Operations (in dollars per share)	(2.10)	(1.99)	(2.11)
Total (in dollars per share)	$ 0.62	$ (1.16)	$ (2.02)
Weighted-average shares used to compute earnings (loss) per share:
Basic (in shares)	12,295,999	12,091,712	12,007,000
Diluted (in shares)	12,510,901	12,192,949	12,269,143