GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill by Segment

Changes in the carrying amount of goodwill by segment were as follows: 

(In millions)	Specialty Engineered Materials		Color, Additives and Inks		Total
Balance at January 1, 2024	$	682.5	$	1,036.8	$	1,719.3
Currency translation	(26.2)		(33.4)		(59.6)
Balance at December 31, 2024	656.3		1,003.4		1,659.7
Currency translation	55.1		42.8		97.9
Balance at December 31, 2025	$	711.4	$	1,046.2	$	1,757.6

Schedule of Indefinite-Lived Intangible Assets

Indefinite and finite-lived intangible assets consisted of the following:

	As of December 31, 2025
(In millions)	Acquisition Cost		Accumulated Amortization		Currency Translation		Net
Customer relationships	$	726.2	$	(269.7)	$	39.2	$	495.7
Patents, technology and other	847.0		(301.4)		46.2		591.8
Indefinite-lived trade names	362.8		—		42.1		404.9
Total	$	1,936.0	$	(571.1)	$	127.5	$	1,492.4

	As of December 31, 2024
(In millions)	Acquisition Cost		Accumulated Amortization		Currency Translation		Net
Customer relationships	$	726.2	$	(234.9)	$	(0.4)	$	490.9
Patents, technology and other	847.0		(255.8)		(6.1)		585.1
Indefinite-lived trade names	362.8		—		11.6		374.4
Total	$	1,936.0	$	(490.7)	$	5.1	$	1,450.4

Schedule of Finite-Lived Intangible Assets

Indefinite and finite-lived intangible assets consisted of the following:

	As of December 31, 2025
(In millions)	Acquisition Cost		Accumulated Amortization		Currency Translation		Net
Customer relationships	$	726.2	$	(269.7)	$	39.2	$	495.7
Patents, technology and other	847.0		(301.4)		46.2		591.8
Indefinite-lived trade names	362.8		—		42.1		404.9
Total	$	1,936.0	$	(571.1)	$	127.5	$	1,492.4

	As of December 31, 2024
(In millions)	Acquisition Cost		Accumulated Amortization		Currency Translation		Net
Customer relationships	$	726.2	$	(234.9)	$	(0.4)	$	490.9
Patents, technology and other	847.0		(255.8)		(6.1)		585.1
Indefinite-lived trade names	362.8		—		11.6		374.4
Total	$	1,936.0	$	(490.7)	$	5.1	$	1,450.4

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

We expect finite-lived intangibles amortization expense for the next five years as follows:

(In millions)	2026		2027		2028		2029		2030
Expected amortization expense	$	84.6	$	82.4	$	81.8	$	81.5	$	80.6