BUSINESS ACQUISITIONS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Business Combinations [Abstract]
Finite-lived Intangible Assets Acquired			$ 407.4
Payments to Acquire Businesses, Net of Cash Acquired		$ 326.0	1,013.6	$ 326.0
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired			407.4
Goodwill, Acquired During Period			571.3
Business Acquisition, Pro Forma Revenue	$ 3,754.1	4,071.5	11,663.8	12,104.1
Business Acquisition, Pro Forma Net Income (Loss)	352.0	584.6	1,201.8	$ 1,811.1
Other acquirees
Business Combinations [Abstract]
Finite-lived Intangible Assets Acquired		142.5
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		142.5
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	27.1		27.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	1.6		1.6
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	53.5		53.5
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	17.7		17.7
Goodwill, Acquired During Period		$ 219.2	571.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	407.4		407.4
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	1,086.4		1,086.4
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	72.8		72.8
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	1,013.6		1,013.6
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, Other	56.6		56.6
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	0.0		0.0
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation	2.9		2.9
PGDx
Business Acquisition [Line Items]
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, Current Assets, Prepaid Expense and Other Assets	0.0		0.0
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, Deferred Tax Assets	17.7		17.7
Goodwill, Acquired During Period			62.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	(134.2)		(134.2)
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	(54.2)		(54.2)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	(70.0)		(70.0)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(54.2)		(54.2)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	0.0		0.0
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	32.9		32.9
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	(17.1)		(17.1)
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation	0.0		0.0
2022 Preliminary Acquisitions
Business Acquisition [Line Items]
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, 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
Goodwill, Acquired During Period			62.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	71.7		71.7
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, 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, Goodwill, and Liabilities Assumed, Net	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 Asset Acquired and Liability Assumed, Lease Obligation	0.0		0.0
Acsension Health
Business Acquisition [Line Items]
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, 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
Goodwill, Acquired During Period			161.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	197.0		197.0
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, 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, Goodwill, and Liabilities Assumed, Net	423.8		423.8
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	2.9		2.9
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation	0.0		0.0
Personal Genome Diagnostics, Inc
Business Acquisition [Line Items]
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, 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
Goodwill, Acquired During Period			285.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	272.9		272.9
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, 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, Goodwill, and Liabilities Assumed, Net	455.0		455.0
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, Other	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	0.0		0.0
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation	$ 17.1		$ 17.1
Customer Relationships [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
Noncompete Agreements [Member] | Maximum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				15 years