ACQUISITIONS (Details)				3 Months Ended	12 Months Ended
	Jun. 01, 2025 USD ($) customer	Jun. 21, 2024 USD ($)	Sep. 01, 2022 USD ($)	Jul. 31, 2025 USD ($)	Oct. 31, 2025 USD ($)	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Dec. 31, 2026 USD ($)
Business Combination [Line Items]
Goodwill acquired					$ 2,591,100,000	$ 2,575,900,000	$ 2,491,300,000
Contingent consideration payment					59,000,000.0	0	$ 0
LMC
Business Combination [Line Items]
Cash purchase price	$ 22,500,000
Contingent consideration	$ 5,800,000
Number of customers retained | customer	2
Goodwill deductible for tax reporting purposes	$ 0
Goodwill acquired					14,700,000
Intangibles acquired					12,900,000
Total assets acquired, excluding goodwill and intangibles					19,800,000
Liabilities assumed					19,000,000.0
Revenues associated with acquisition					23,000,000.0
Quality Uptime
Business Combination [Line Items]
Cash purchase price		$ 116,300,000
Goodwill acquired					77,400,000
Intangibles acquired					35,200,000
Total assets acquired, excluding goodwill and intangibles					24,000,000.0
Liabilities assumed					20,300,000
Business acquisition, goodwill, tax deductible amortization period		15 years
RavenVolt
Business Combination [Line Items]
Cash purchase price			$ 170,000,000
Contingent consideration			59,000,000		$ 32,500,000	109,100,000
Contingent consideration payment				$ 75,000,000		$ 0
Operating cash outflow amount of contingent consideration payment				$ 16,000,000
RavenVolt | Forecast
Business Combination [Line Items]
Maximum contingent consideration payable in future years								$ 130,000,000
RavenVolt | Maximum
Business Combination [Line Items]
Potential post-closing contingent consideration			$ 280,000,000