GOODWILL AND INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The balances, net of impairment, and changes in the carrying amount of goodwill were as follows:

	Dx		BLS		Total
Balance as of December 31, 2024	$	5,102.5	$	1,267.2	$	6,369.7
Goodwill acquired during the period	179.9		—		179.9
Foreign currency impact and other adjustments to Goodwill	49.6		83.1		132.7
Balance as of September 30, 2025	$	5,332.0	$	1,350.3	$	6,682.3

Schedule of Intangible Assets and Goodwill [Table Text Block]

The components of identifiable intangible assets were as follows:

				September 30, 2025						December 31, 2024
	Range of Useful Lives (in Years)			Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Definite-lived intangible assets:
Customer relationships	10	-	36	$	4,425.4	$	(1,742.6)	$	2,682.8	$	4,114.7	$	(1,540.7)	$	2,574.0
Patents, licenses, and technology	3	-	15	546.6		(328.8)		217.8		541.0		(298.3)		242.7
Non-compete agreements	3	-	5	194.4		(100.8)		93.6		180.2		(83.9)		96.3
Other	1	-	15	39.9		(27.1)		12.8		39.9		(21.5)		18.4
				$	5,206.3	$	(2,199.3)	$	3,007.0	$	4,875.8	$	(1,944.4)	$	2,931.4
Indefinite-lived intangible assets:
Canadian and other licenses				$	564.4	N/A		$	564.4	$	557.5	N/A		$	557.5
Total intangible assets				$	5,770.7	$	(2,199.3)	$	3,571.4	$	5,433.3	$	(1,944.4)	$	3,488.9