Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Net sales	$ 417.6	$ 423.5
Cost of sales	346.2	356.3
Selling, general and administrative expenses	47.1	45.3
Restructuring, acquisition-related and other special charges	0.3	2.5
Gains on sales of assets	0.0	(0.8)
Operating income	24.0	20.2
Other components of pension and other postretirement benefits income, net	1.3	0.7
Interest expense, net	(11.9)	(10.7)
Income from continuing operations before income taxes	13.4	10.2
Income tax expense	(3.3)	(2.6)
Income from continuing operations	10.1	7.6
Loss (income) attributable to noncontrolling interests	0.5	(0.1)
Income from continuing operations attributable to Park-Ohio Holdings Corp. common shareholders	10.6	7.5
Loss from discontinued operations, net of tax (Note 5)	(1.0)	(1.7)
Net income attributable to Park-Ohio Holdings Corp. common shareholders	$ 9.6	$ 5.8
Basic:
Continuing operations (in dollars per share)	$ 0.85	$ 0.61
Discontinued operations (in dollars per share)	(0.08)	(0.14)
Total (in dollars per share)	0.77	0.47
Diluted:
Continuing operations (in dollars per share)	0.83	0.61
Discontinued operations (in dollars per share)	(0.08)	(0.14)
Total (in dollars per share)	$ 0.75	$ 0.47