BUSINESS ACQUISITIONS (Details) - USD ($)						12 Months Ended
	Jun. 20, 2023	Apr. 17, 2023	Feb. 01, 2022	Dec. 13, 2021	Jun. 01, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2023
Business Acquisition [Line Items]
Total consideration						$ 699,000,000	$ 162,000,000	$ 346,000,000
Contingent consideration							18,000,000	15,000,000	$ 88,000,000
Goodwill acquired during the year						511,000,000	121,000,000
Goodwill deductible for tax purposes						244,000,000	103,000,000	221,000,000
Cash consideration						612,000,000	148,000,000	331,000,000
Goodwill						7,733,000,000	7,220,000,000	7,095,000,000
Cash acquired from acquisition						1,000,000	4,000,000
Goodwill acquired, before adjustments							121,000,000	236,000,000
Finite-lived intangibles							45,000,000	107,000,000
Business acquisitions, net of cash acquired						611,000,000	$ 144,000,000	$ 331,000,000
Customer - related
Business Acquisition [Line Items]
Finite-lived intangibles						$ 63,000,000
Finite-lived intangible asset, useful life						17 years
Technology-Based Intangible Assets
Business Acquisition [Line Items]
Finite-lived intangibles						$ 145,000,000
Finite-lived intangible asset, useful life						15 years
New York-Presbyterian
Business Acquisition [Line Items]
Goodwill deductible for tax purposes		$ 222,000,000
Cash consideration		275,000,000
Goodwill		222,000,000
New York-Presbyterian | Customer - related
Business Acquisition [Line Items]
Finite-lived intangibles		$ 53,000,000
Finite-lived intangible asset, useful life		15 years
Haystack Oncology, Inc.
Business Acquisition [Line Items]
Total consideration	$ 392,000,000
Contingent consideration	88,000,000
Cash consideration	304,000,000
Goodwill	267,000,000
Cash acquired from acquisition	1,000,000
Deferred tax liabilities	23,000,000
Operating lease right-of-use assets	8,000,000
Property, plant and equipment, net	3,000,000
Operating lease liabilities	8,000,000
Haystack Oncology, Inc. | Additional, Reimbursement Coverage
Business Acquisition [Line Items]
Contingent consideration arrangements, range of outcomes, value, high	50,000,000
Haystack Oncology, Inc. | Technology-Based Intangible Assets
Business Acquisition [Line Items]
Finite-lived intangibles	$ 145,000,000
Finite-lived intangible asset, useful life	15 years
Pack Health, LLC
Business Acquisition [Line Items]
Total consideration			$ 123,000,000
Contingent consideration			18,000,000
Goodwill deductible for tax purposes			78,000,000
Finite-lived intangibles			30,000,000
Goodwill			96,000,000
Cash acquired from acquisition			4,000,000
Operating lease right-of-use assets			5,000,000
Business acquisitions, net of cash acquired			105,000,000
Operating lease liabilities			5,000,000
Working capital			$ (3,000,000)
Pack Health, LLC | Customer - related
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life			15 years
Mercy Health
Business Acquisition [Line Items]
Goodwill deductible for tax purposes					$ 171,000,000
Cash consideration					225,000,000
Mercy Health | Customer - related
Business Acquisition [Line Items]
Finite-lived intangibles					$ 54,000,000
Finite-lived intangible asset, useful life					15 years
Labtech Diagnostics, LLC
Business Acquisition [Line Items]
Total consideration				$ 95,000,000
Contingent consideration				15,000,000
Goodwill deductible for tax purposes				33,000,000
Cash consideration				80,000,000
Goodwill				48,000,000
Operating lease right-of-use assets				6,000,000
Property, plant and equipment, net				11,000,000
Operating lease liabilities				6,000,000
Finance lease liabilities				9,000,000
Inventories				1,000,000
Labtech Diagnostics, LLC | Customer - related
Business Acquisition [Line Items]
Finite-lived intangibles				$ 44,000,000
Finite-lived intangible asset, useful life				15 years