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BUSINESS ACQUISITIONS (Details) - USD ($) |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 06, 2018 | Sep. 19, 2018 | Jun. 18, 2018 | Feb. 01, 2018 | Dec. 07, 2017 | Dec. 01, 2017 | Sep. 28, 2017 | Jul. 14, 2017 | May 01, 2017 | Feb. 29, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  |  |  |  |  |  |  |  |  |  | $ 440,000,000 | $ 587,000,000 | $ 139,000,000
Goodwill acquired during the year |  |  |  |  |  |  |  |  |  |  | 228,000,000 | 335,000,000 |
Goodwill deductible for tax purposes |  |  |  |  |  |  |  |  |  |  | 190,000,000 | 273,000,000 | 95,000,000
Finite-lived intangibles |  |  |  |  |  |  |  |  |  |  | 178,000,000 | 242,000,000 | 44,000,000
Revenues |  |  |  |  |  |  |  |  |  |  | 84,000,000 |  |
Cash acquired from acquisition |  |  |  |  |  |  |  |  |  |  | 6,000,000 | 12,000,000 |
Goodwill |  |  |  |  |  |  |  |  |  |  | $ 6,563,000,000 | 6,335,000,000 | $ 6,000,000,000
Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  |  |  |  |  |  |  |  | 18 years |  |
Mobile Medical Examination Services, Inc. (MedXM) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  |  |  | $ 142,000,000 |  |  |  |  |  |  |  |  |
Goodwill deductible for tax purposes |  |  |  | 45,000,000 |  |  |  |  |  |  |  |  |
Finite-lived intangibles |  |  |  | 77,000,000 |  |  |  |  |  |  |  |  |
Cash acquired from acquisition |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |
Cash consideration |  |  |  | 130,000,000 |  |  |  |  |  |  |  |  |
Goodwill |  |  |  | 57,000,000 |  |  |  |  |  |  |  |  |
Working capital |  |  |  | 7,000,000 |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |
Mobile Medical Examination Services, Inc. (MedXM) [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  | 15 years |  |  |  |  |  |  |  |  |
Mobile Medical Examination Services, Inc. (MedXM) [Member] | Other Operating Income (Expense) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration arrangements |  |  |  |  |  |  |  |  |  |  | $ (12,000,000) |  |
Mobile Medical Examination Services, Inc. (MedXM) [Member] | Level 3 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated contingent consideration |  |  |  | $ 12,000,000 |  |  |  |  |  |  | 0 |  |
Cape Cod Healthcare, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration |  |  | $ 35,000,000 |  |  |  |  |  |  |  |  |  |
ReproSource, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  | $ 35,000,000 |  |  |  |  |  |  |  |  |  |  |
Cash consideration |  | 30,000,000 |  |  |  |  |  |  |  |  |  |  |
ReproSource, Inc. [Member] | Level 3 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated contingent consideration |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |
Oxford Immunotec, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill deductible for tax purposes | $ 99,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangibles | 54,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Cash acquired from acquisition | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration | 170,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Working capital | 12,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment, net | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Oxford Immunotec, Inc. [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible asset, useful life | 15 years |  |  |  |  |  |  |  |  |  |  |  |
Oxford Immunotec, Inc. [Member] | Customer Contracts [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible asset, useful life | 5 years |  |  |  |  |  |  |  |  |  |  |  |
PeaceHealth (PHL) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill deductible for tax purposes |  |  |  |  |  |  |  |  | $ 71,000,000 |  |  |  |
Cash consideration |  |  |  |  |  |  |  |  | 101,000,000 |  |  |  |
PeaceHealth (PHL) [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangibles |  |  |  |  |  |  |  |  | $ 30,000,000 |  |  |  |
Finite-lived intangible asset, useful life |  |  |  |  |  |  |  |  | 15 years |  |  |  |
Med Fusion and Clear Point [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill deductible for tax purposes |  |  |  |  |  |  |  | $ 62,000,000 |  |  |  |  |
Cash consideration |  |  |  |  |  |  |  | 150,000,000 |  |  |  |  |
Goodwill |  |  |  |  |  |  |  | 64,000,000 |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  | 31,000,000 |  |  |  |  |
Med Fusion and Clear Point [Member] | Capital Lease Obligations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Capital lease obligation |  |  |  |  |  |  |  | 28,000,000 |  |  |  |  |
Med Fusion and Clear Point [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangibles |  |  |  |  |  |  |  | $ 84,000,000 |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  |  |  |  |  | 15 years |  |  |  |  |
The William W. Backus Hospital and The Hospital of Central Connecticut [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration |  |  |  |  |  |  | $ 30,000,000 |  |  |  |  |  |
Cleveland HeartLab, Inc. (CHL) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill deductible for tax purposes |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |
Cash acquired from acquisition |  |  |  |  |  | 12,000,000 |  |  |  |  |  |  |
Cash consideration |  |  |  |  |  | 94,000,000 |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | 55,000,000 |  |  |  |  |  |  |
Working capital |  |  |  |  |  | 4,000,000 |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  | 3,000,000 |  |  |  |  |  |  |
Deferred tax assets |  |  |  |  |  | 11,000,000 |  |  |  |  |  |  |
Deferred tax liabilities |  |  |  |  |  | 11,000,000 |  |  |  |  |  |  |
Cleveland HeartLab, Inc. (CHL) [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangibles |  |  |  |  |  | $ 32,000,000 |  |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  |  |  | 15 years |  |  |  |  |  |  |
Shiel Holdings LLC (Shiel) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  |  |  |  | $ 176,000,000 |  |  |  |  |  |  |  |
Goodwill deductible for tax purposes |  |  |  |  | 100,000,000 |  |  |  |  |  |  |  |
Cash consideration |  |  |  |  | 170,000,000 |  |  |  |  |  |  |  |
Estimated contingent consideration |  |  |  |  | 6,000,000 |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 106,000,000 |  |  |  |  |  |  |  |
Shiel Holdings LLC (Shiel) [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangibles |  |  |  |  | $ 70,000,000 |  |  |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  |  | 15 years |  |  |  |  |  |  |  |
Shiel Holdings LLC (Shiel) [Member] | Level 3 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated contingent consideration |  |  |  |  |  |  |  |  |  |  | $ 7,000,000 | $ 6,000,000 |
Clinical Laboratory Partners, LLC (CLP) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill deductible for tax purposes |  |  |  |  |  |  |  |  |  | $ 91,000,000 |  |  |
Cash consideration |  |  |  |  |  |  |  |  |  | 135,000,000 |  |  |
Clinical Laboratory Partners, LLC (CLP) [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangibles |  |  |  |  |  |  |  |  |  | $ 43,000,000 |  |  |
Finite-lived intangible asset, useful life |  |  |  |  |  |  |  |  |  | 15 years |  |  |

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