Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 428.1	$ 369.8	$ 851.6	$ 727.5
Cost of sales	358.0	316.1	714.3	624.9
Selling, general and administrative expenses	46.8	40.5	92.1	80.7
Restructuring and other special charges	4.1	2.3	6.6	5.6
Gains on sales of assets	0.0	(2.9)	(0.8)	(2.9)
Operating income	19.2	13.8	39.4	19.2
Other components of pension income and other postretirement benefits expense, net	0.6	2.8	1.3	5.6
Interest expense, net	(11.1)	(7.6)	(21.8)	(14.7)
Income from continuing operations before income taxes	8.7	9.0	18.9	10.1
Income tax (expense) benefit	(2.1)	(2.1)	(4.7)	0.7
Income from continuing operations	6.6	6.9	14.2	10.8
Loss (income) attributable to noncontrolling interests	0.5	(0.5)	0.4	(0.7)
Income from continuing operations attributable to Park-Ohio Holdings Corp. common shareholders	7.1	6.4	14.6	10.1
(Loss) income from discontinued operations, net of tax (Note 5)	(1.7)	(5.4)	(3.4)	(3.0)
Net income attributable to Park-Ohio Holdings Corp. common shareholders	$ 5.4	$ 1.0	$ 11.2	$ 7.1
Basic:
Continuing operations (in dollars per share)	$ 0.58	$ 0.53	$ 1.20	$ 0.83
Discontinued operations (in dollars per share)	(0.14)	(0.45)	(0.28)	(0.25)
Total (in dollars per share)	0.44	0.08	0.92	0.58
Diluted:
Continuing operations (in dollars per share)	0.57	0.52	1.18	0.83
Discontinued operations (in dollars per share)	(0.14)	(0.44)	(0.28)	(0.25)
Total (in dollars per share)	$ 0.43	$ 0.08	$ 0.90	$ 0.58