BUSINESS ACQUISITIONS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Business Combinations [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired			$ 516.7	$ 1,013.6
Business Acquisition [Line Items]
Goodwill, Acquired During Period			230.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		$ 2.1		2.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	$ (520.6)		(520.6)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other	3.9		3.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(3.9)		(3.9)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	516.7		516.7
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles			19.5	(134.2)
Business Acquisition, Pro Forma Revenue	2,933.5	3,073.4	9,205.7	9,218.6
Business Acquisition, Pro Forma Net Income (Loss)	358.5	185.2	1,228.7	597.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			0.2
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets				(54.2)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period			0.0	0.0
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities				(54.2)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	0.4		0.4
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	4.7		4.7
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment			(1.5)	0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	(3.0)		(3.0)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory			0.0	0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	1.3		1.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	(284.6)		(284.6)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	0.0		0.0
Payments to Acquire Businesses, Net of Cash Acquired			516.7	1,013.6
Accounts Receivable [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets			(10.6)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period			0.0	0.0
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities			(10.6)
Prepaid Expenses and Other Current Assets [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period			0.6	0.0
Goodwill [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period			(29.4)	62.3
Other Noncurrent Assets [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period			0.0	0.0
Accrued Liabilities [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period			(8.3)	32.9
Other Noncurrent Liabilities [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period			(2.3)	(70.0)
Accounts Payable [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period				0.0
Deferred Tax Asset
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period				17.7
Deferred income tax liabilities
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period				(17.1)
Lease obligation
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period				0.0
Deferred revenue member
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period				0.0
Other Current Assets [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period				0.0
Other acquirees
Business Combinations [Abstract]
Finite-lived Intangible Assets Acquired			284.6	407.4
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired			284.6	407.4
Goodwill, Acquired During Period			230.5	571.3
Personal Genome Diagnostics, Inc
Business Acquisition [Line Items]
Goodwill, Acquired During Period				285.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		(579.1)		(579.1)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable		3.8		3.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities		23.7		23.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue		3.3		3.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities		(17.1)		(17.1)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		(76.2)		(76.2)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		(124.1)		(124.1)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		455.0		455.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets		1.2		1.2
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		9.9		9.9
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		(4.1)		(4.1)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other		2.9		2.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory		2.5		2.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		(272.9)		(272.9)
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation		0.0		0.0
Other Acquisitions
Business Combinations [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired			28.9
Business Acquisition [Line Items]
Goodwill, Acquired During Period				62.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		0.8		0.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		(134.8)		(134.8)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		134.8		134.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets		0.0		0.0
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		0.1		0.1
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		(71.7)		(71.7)
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation		0.0		0.0
Payments to Acquire Businesses, Net of Cash Acquired			28.9
Total acquisitions and adjustments
Business Acquisition [Line Items]
Goodwill, Acquired During Period			201.1	571.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	2.1	0.8	2.1	0.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	(510.0)	(1,086.4)	(510.0)	(1,086.4)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable		3.8		3.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities		56.6		56.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other	(4.4)		(4.4)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue		3.3		3.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	2.3	0.0	2.3	0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		(6.2)		(6.2)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	6.7	(72.8)	6.7	(72.8)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	516.7	1,013.6	516.7	1,013.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	1.0	1.6	1.0	1.6
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	3.2	53.5	3.2	53.5
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		17.7		17.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	3.0	(4.1)	3.0	(4.1)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other		2.9		2.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	1.3	27.1	1.3	27.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	(304.1)	(407.4)	(304.1)	(407.4)
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation		2.9		2.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	$ 0.2		0.2
Acsension Health
Business Acquisition [Line Items]
Goodwill, Acquired During Period				161.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		(426.7)		(426.7)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		(2.9)		(2.9)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		423.8		423.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets		0.4		0.4
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		43.5		43.5
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other		0.0		0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory		24.6		24.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		(197.0)		(197.0)
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation		$ 2.9		$ 2.9
Jefferson Health
Business Combinations [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired			108.0
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			108.0
Enzo BioChem
Business Combinations [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired			112.8
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			112.8
Providence Health
Business Combinations [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired			110.0
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			110.0
Tufts Medicine
Business Combinations [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired			157.0
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			$ 157.0
Noncompete Agreements [Member] | Maximum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				23 years
Noncompete Agreements [Member] | Minimum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				5 years
Customer Lists | Maximum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			15 years
Customer Lists | Minimum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			5 years