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Amount of allowance for credit loss on receivable, classified as other and current.

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REVENUES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
REVENUES (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Revenue from Contract with Customer [Abstract]
Deferred Revenue, Revenue Recognized	$ 34.1	$ 34.4	$ 92.4	$ 103.3
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: BLS allowance for credit losses	37.2		37.2		$ 36.4
Accounts receivable, net	2,342.4		2,342.4		2,103.8
Gross unbilled services	165.9		165.9		164.0
Less: BLS allowance for credit losses	(3.5)		(3.5)		(7.1)
Unbilled services, net		$ 162.4		$ 162.4	156.9
Allowance for Credit Loss, Write Off			(7.4)
Unbilled Services, Foreign Currency Translation Impact			0.0
Unbilled Services, Allowance for Credit Loss	3.5		3.5		7.1
Allowance for Credit Loss, Foreign Currency Translation Impact			(0.3)
Allowance for Credit Loss	40.7		40.7		43.5
Credit Loss Expense (Reversal)			4.9
Unbilled Services, Credit Loss Expense (Reversal)			0.0
Accounts Receivable, Credit Loss Expense (Reversal)			4.9
Unbilled Services, Allowance for Credit Loss, Write Off			3.6
Accounts Receivable, Allowance for Credit Loss, Writeoff			3.8
Accounts Receivable, Credit Loss Expense (Reversal)			(0.3)
Diagnostics
Financing Receivable, Allowance for Credit Loss [Line Items]
Accounts Receivable, before Allowance for Credit Loss	1,546.6		1,546.6		1,349.0
Biopharma Laboratory Services
Financing Receivable, Allowance for Credit Loss [Line Items]
Accounts Receivable, before Allowance for Credit Loss	$ 833.0		$ 833.0		$ 791.2