ACQUISITIONS AND DISPOSITIONS - Narrative (Details) - USD ($)				3 Months Ended	12 Months Ended
	Sep. 01, 2022	Apr. 07, 2022	Sep. 30, 2021	Oct. 31, 2022	Dec. 31, 2026	Oct. 31, 2022	Oct. 31, 2021	Dec. 31, 2025	Dec. 31, 2024	Sep. 30, 2022	Oct. 31, 2020
Business Acquisition [Line Items]
Goodwill				$ 2,485,600,000		$ 2,485,600,000	$ 2,228,900,000				$ 1,671,400,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]						Selling, general and administrative expenses
Technical Solutions
Business Acquisition [Line Items]
Goodwill				367,400,000		$ 367,400,000	162,700,000				$ 161,500,000
Customer Contracts For Healthcare Technology Management | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Technical Solutions
Business Acquisition [Line Items]
Sale of customer contracts for clinical engineering services, consideration				8,500,000		8,500,000
Gain on sale of government services business						7,600,000
RavenVolt
Business Acquisition [Line Items]
Cash purchase price	$ 170,000,000
Fair value of contingent consideration	59,000,000
Revenues associated with acquisition				14,700,000		14,700,000
Operating profit (loss) associated with acquisition				(200,000)		(200,000)
Goodwill	207,500,000
Intangibles acquired	16,500,000
RavenVolt | Forecast
Business Acquisition [Line Items]
Maximum contingent consideration payable in future years					$ 130,000,000			$ 75,000,000	$ 75,000,000
RavenVolt | Maximum
Business Acquisition [Line Items]
Potential post-closing contingent consideration	$ 280,000,000
RavenVolt | Maximum | Forecast
Business Acquisition [Line Items]
Potential post-closing contingent consideration					$ 280,000,000
Momentum
Business Acquisition [Line Items]
Revenues associated with acquisition				17,600,000		40,400,000
Operating profit (loss) associated with acquisition				1,000,000		2,400,000
Aggregate purchase price		$ 54,800,000
Goodwill tax deductible amount		$ 0
Goodwill				41,600,000		41,600,000
Intangibles acquired				10,400,000		10,400,000
Total assets acquired, excluding goodwill and intangibles				20,300,000		20,300,000
Liabilities assumed				$ 17,600,000		$ 17,600,000
Able
Business Acquisition [Line Items]
Revenues associated with acquisition							101,100,000
Operating profit (loss) associated with acquisition							4,400,000
Aggregate purchase price			$ 741,700,000
Goodwill tax deductible amount										$ 0
Goodwill							$ 554,000,000.0			$ 574,200,000
Cash consideration placed in escrow			12,100,000
Cash consideration placed in escrow for indemnification asset			$ 8,200,000
Pro forma statutory tax rate			28.00%
Able | Revolving Credit Facility
Business Acquisition [Line Items]
Proceeds from lines of credit			$ 325,000,000
Weighted average interest rate			1.58%