Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net sales	$ 418.8	$ 383.8	$ 1,270.4	$ 1,111.3
Cost of sales	348.8	331.4	1,063.1	956.3
Selling, general and administrative expenses	43.0	36.5	135.1	117.2
Restructuring and other special charges	0.0	4.3	6.6	9.9
Gains on sales of assets	0.0	0.0	(0.8)	(2.9)
Operating income	27.0	11.6	66.4	30.8
Other components of pension income and other postretirement benefits expense, net	0.6	2.7	1.9	8.3
Interest expense, net	(11.6)	(9.0)	(33.4)	(23.7)
Income from continuing operations before income taxes	16.0	5.3	34.9	15.4
Income tax (expense) benefit	(3.8)	2.2	(8.5)	2.9
Income from continuing operations	12.2	7.5	26.4	18.3
Loss (income) attributable to noncontrolling interests	0.3	(0.4)	0.7	(1.1)
Income from continuing operations attributable to Park-Ohio Holdings Corp. common shareholders	12.5	7.1	27.1	17.2
Loss from discontinued operations, net of tax (Note 5)	(1.4)	(4.4)	(4.8)	(7.4)
Net income attributable to Park-Ohio Holdings Corp. common shareholders	$ 11.1	$ 2.7	$ 22.3	$ 9.8
Basic:
Continuing operations (in dollars per share)	$ 1.01	$ 0.58	$ 2.22	$ 1.42
Discontinued operations (in dollars per share)	(0.11)	(0.36)	(0.39)	(0.61)
Total (in dollars per share)	0.90	0.22	1.83	0.81
Diluted:
Continuing operations (in dollars per share)	0.99	0.58	2.19	1.41
Discontinued operations (in dollars per share)	(0.11)	(0.36)	(0.39)	(0.61)
Total (in dollars per share)	$ 0.88	$ 0.22	$ 1.80	$ 0.80