FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($)	2 Months Ended	3 Months Ended							10 Months Ended	11 Months Ended	12 Months Ended
	Sep. 30, 2025	Jul. 31, 2025	Apr. 30, 2025	Jan. 31, 2025	Oct. 31, 2024	Jul. 31, 2024	Apr. 30, 2024	Jan. 31, 2024	Sep. 30, 2024	Sep. 30, 2025	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains recorded in interest expense	$ (9,800,000)	$ (14,500,000)	$ (15,600,000)	$ (16,200,000)	$ (16,600,000)	$ (18,800,000)	$ (8,200,000)	$ (2,400,000)	$ (40,700,000)	$ (56,100,000)	$ (46,000,000.0)	$ (15,700,000)
Proceeds from hedging derivatives										22,500,000	0	0
Stockholders' equity	2,952,400,000				2,117,500,000					2,952,400,000	2,117,500,000	1,986,300,000	$ 1,794,300,000
Asset impairment charges	10,100,000	$ 3,400,000	$ 10,700,000	13,700,000	700,000	$ 200,000	$ 400,000	$ 1,300,000	$ 2,300,000	37,900,000	2,600,000	20,300,000
Impairment of long lived assets										23,400,000	2,600,000	20,300,000
Carrying value of impaired asset	49,400,000				10,700,000					49,400,000	10,700,000	30,500,000
Long-lived assets, fair value	26,000,000.0				8,100,000					26,000,000.0	8,100,000	10,200,000
Impairment of intangible assets, finite-lived										2,600,000
Customized Polymer Solutions
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Asset impairment charges										3,100,000	300,000	100,000
Impairment of long lived assets										700,000	300,000	100,000
Impairment of intangible assets, finite-lived										2,400,000
Durable Metal Solutions
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Asset impairment charges										2,300,000	400,000	1,800,000
Impairment of long lived assets										2,300,000	400,000	1,800,000
Sustainable Fiber Solutions
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Asset impairment charges										31,800,000	1,700,000	17,700,000
Impairment of long lived assets										17,300,000	1,700,000	17,700,000
Impairment of assets held for sale										14,500,000
Integrated Solutions
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Asset impairment charges										700,000	200,000	700,000
Impairment of long lived assets										500,000	200,000	700,000
Impairment of intangible assets, finite-lived										200,000
Accumulated Other Comprehensive Income (Loss)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Stockholders' equity	(250,800,000)				(355,100,000)					(250,800,000)	(355,100,000)	(316,500,000)	$ (302,300,000)
Interest rate derivatives | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative notional amount	$ 562,500,000				1,400,000,000					$ 562,500,000	1,400,000,000
Interest rate	1.87%									1.87%
Other comprehensive loss, cash flow hedge, gain (loss), before reclassification and tax										$ 17,600,000	34,800,000	28,500,000
Derivative gain										8,400,000
Other comprehensive loss, cash flow hedge										5,300,000
Foreign exchange hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative notional amount	$ 165,000,000.0				74,100,000					165,000,000.0	74,100,000
Realized gains (losses) recorded under fair value contracts										400,000	1,000,000.0	1,200,000
Unrealized gain (loss) on foreign currency										(100,000)	100,000	0
Cross currency swap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative notional amount	$ 534,900,000				$ 447,600,000					$ 534,900,000	447,600,000
Derivative, interest rate	1.64%									1.64%
Gains recorded in interest expense										$ 6,900,000	$ 6,400,000	$ 5,100,000
Proceeds from hedging derivatives				22,500,000
Cross currency swap | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Proceeds from hedging derivatives				11,000,000.0
Cross currency swap | Net Investment Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Proceeds from hedging derivatives				$ 11,500,000
Net investment hedge, gain before reclassification and tax										11,300,000
Cross currency swap | Net Investment Hedging | Accumulated Other Comprehensive Income (Loss)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Stockholders' equity	$ 1,800,000									$ 1,800,000