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BUSINESS ACQUISITIONS - Narrative (Details) € in Millions, £ in Millions |  |  |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 29, 2019 EUR (€) | Apr. 29, 2019 USD ($) | Apr. 03, 2018 USD ($) | Jan. 11, 2018 USD ($) | Mar. 30, 2019 USD ($) | Mar. 30, 2019 GBP (£) | Mar. 31, 2018 USD ($) | Sep. 29, 2018 USD ($) | Sep. 29, 2018 GBP (£) | Mar. 26, 2018 USD ($) | Jan. 11, 2018 GBP (£)
Credit facility | $2.3 Billion Credit Facility |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Credit facility |  |  |  |  |  |  |  |  |  | $ 2,300,000,000.0 |
Citoxlab |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Integration related costs and transaction costs |  |  |  |  | $ 5,200,000 |  |  |  |  |  |
MPI Research |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  | $ 829,700,000 |  |  |  |  |  |  |  |
Integration related costs and transaction costs |  |  |  |  | 100,000 |  | $ 2,700,000 |  |  |  |
Purchase price allocation |  |  | 800,800,000 |  |  |  |  |  |  |  |
Cash acquired |  |  | 27,700,000 |  |  |  |  |  |  |  |
Adjustments related to prior period |  |  | 1,200,000 |  |  |  |  |  |  |  |
Goodwill, amount expected to be deductible for tax purposes |  |  | $ 4,100,000 |  |  |  |  |  |  |  |
Weighted average amortization life of intangible assets acquired |  |  | 12 years |  |  |  |  |  |  |  |
MPI Research | Client relationships |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Weighted average amortization life of intangible assets acquired |  |  | 13 years |  |  |  |  |  |  |  |
KWS BioTest Limited |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  |  | $ 20,300,000 |  |  |  |  |  |  |
Integration related costs and transaction costs |  |  |  |  | 100,000 |  | 400,000 |  |  |  |
Purchase price allocation |  |  |  | 21,529,000 |  |  |  |  |  |  |
Cash acquired |  |  |  | 1,000,000 |  |  |  |  |  |  |
Adjustments related to prior period |  |  |  | $ 400,000 |  |  |  |  |  |  |
Undiscounted contingent payments |  |  |  |  |  |  |  | $ 2,600,000 | £ 2.0 |  | £ 3.0
Payments for contingent liabilities |  |  |  |  | $ 2,600,000 | £ 2.0 |  |  |  |  |
KWS BioTest Limited | Client relationships |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Weighted average amortization life of intangible assets acquired |  |  |  |  | 12 years | 12 years |  |  |  |  |
Depreciation and Amortization Expense | MPI Research |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Adjustments related to prior period |  |  |  |  |  |  | 6,900,000 |  |  |  |
Interest expense | MPI Research |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Adjustments related to prior period |  |  |  |  |  |  | $ 2,600,000 |  |  |  |
Subsequent Event | Citoxlab |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price | € 448 | $ 500,000,000 |  |  |  |  |  |  |  |  |

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