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BUSINESS ACQUISITIONS (Details) - USD ($) $ in Millions |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 01, 2022 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Business Acquisition [Line Items] |  |  |  |  |
Cash acquired from acquisition |  | $ 4 | $ 0 |  |
Business acquisitions, net of cash acquired |  | 105 | $ 0 |  |
Goodwill |  | $ 7,197 |  | $ 7,095 | $ 6,873
Customer Relationships |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets, useful life |  | 17 years |  |  |
Pack Health, LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Consideration | $ 123 |  |  |  |
Cash acquired from acquisition | 4 |  |  |  |
Business acquisitions, net of cash acquired | 105 |  |  |  |
Contingent consideration | 18 |  |  |  |
Goodwill | 96 |  |  |  |
Goodwill, expected tax deductible amount | 78 |  |  |  |
Intangible assets | 30 |  |  |  |
Operating lease right-of-use assets | 5 |  |  |  |
Operating lease liabilities | 5 |  |  |  |
Working capital | $ (3) |  |  |  |
Pack Health, LLC | Customer Relationships |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets, useful life | 15 years |  |  |  |
Labtech Diagnostics, LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill, purchase adjustments |  | $ 7 |  |  |
Increase to the estimated contingent consideration liability |  | 10 |  |  |
Labtech Diagnostics, LLC | Customer Relationships |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets, purchase adjustments |  | $ 3 |  |  |

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