GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) $ in Millions			12 Months Ended
	Oct. 01, 2025 USD ($)	Oct. 01, 2023 USD ($)	Dec. 31, 2025 USD ($) company	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill acquired during period			$ 306.8	$ 48.2	$ 8.3
Amortization of finite-lived intangible assets for the next five years:
Amortization of finite-lived intangible assets, 2026			345.3
Amortization of finite-lived intangible assets, 2027			340.3
Amortization of finite-lived intangible assets, 2028			337.3
Amortization of finite-lived intangible assets, 2029			335.7
Amortization of finite-lived intangible assets, 2030			334.7
Consumer Brands Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill acquired during period			247.8
Performance Coatings Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill acquired during period			27.4	48.2	8.3
Trademarks
Acquired Indefinite-lived Intangible Assets [Line Items]
Impairment of asset			$ 181.6	163.8	163.8
Trademarks | Consumer Brands Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Impairment of asset		$ 23.9
Trademarks | Performance Coatings Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Impairment of asset	$ 17.8
2025 Acquisitions
Acquired Indefinite-lived Intangible Assets [Line Items]
Number of companies acquired | company			3
Goodwill acquired during period			$ 307.0
Finite lived assets acquired			642.9
Finite-lived intangibles			342.8
Indefinite-lived intangibles			$ 300.1
Acquired finite-lived intangible assets, weighted average amortization period			19 years
Suvinil
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill acquired during period			$ 247.8
Finite lived assets acquired			608.7
Finite-lived intangibles			308.6
Suvinil | Trademarks
Acquired Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangibles			$ 300.1
Metal Packaging Coating Business
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill acquired during period				20.9
Finite lived assets acquired				$ 27.9
Acquired finite-lived intangible assets, weighted average amortization period				15 years
SIC Holding
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill acquired during period					181.3
Finite lived assets acquired					$ 110.8
Acquired finite-lived intangible assets, weighted average amortization period					15 years