Segments - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted EBIT	$ 174.8	$ 125.4	$ 449.1	$ 348.0
Interest expense, net	55.1	35.0	157.9	101.1
Debt extinguishment and refinancing-related costs (benefits)	4.0	(0.4)	7.0	(0.6)
Termination benefits and other employee-related costs	11.5	5.0	13.6	10.1
Acquisition and divestiture-related costs	0.4	0.2	0.8	2.8
Impairment (benefits) charges	(0.1)	(0.1)	15.3	(0.4)
Accelerated depreciation and site closure costs	2.1	1.1	4.0	4.2
Russia sanction-related impacts	(0.2)	(1.3)	(1.5)	4.8
Commercial agreement restructuring charge	0.0	0.0	0.0	25.0
Other adjustments	(0.6)	0.8	(0.9)	1.1
Income before income taxes	102.6	85.1	252.9	199.9
Unconsummated Merger And Acquisition
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Acquisition and divestiture-related costs			0.2	1.9
Performance Coatings
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted EBIT	135.0	121.8	362.1	341.6
Mobility Coatings
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted EBIT	$ 39.8	$ 3.6	$ 87.0	$ 6.4