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Intangible Assets, Goodwill and Other (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 31, 2019 | Jan. 05, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Business Acquisition [Line Items] |  |  |  |  |  |  |
Deferred payments and contingent consideration related to business combinations |  |  |  |  | $ 4.1 | $ 64.7 |
Goodwill |  |  | $ 336.8 |  | 336.8 |  | $ 307.2
Amortization of intangible assets |  |  | 12.4 | $ 10.6 | 24.7 | 20.5 |
Chindex |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Total purchase consideration |  | $ 66.0 |  |  |  |  |
Deferred payments and contingent consideration related to business combinations |  | 64.7 |  |  |  |  |
Cash payments |  | 1.3 |  |  |  |  |
Estimated total undiscounted contingent consideration |  | $ 81.0 |  |  |  |  |
Decrease in undiscounted expected contingent liability |  |  |  |  | (6.0) |  |
Payment of contingent liability |  |  |  |  | 27.3 | 2.0 |
Net additional expense |  |  |  |  | 3.0 | $ 7.1 |
Schölly |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Total purchase consideration | $ 101.4 |  |  |  |  |  |
Cash payments | 34.4 |  |  |  |  |  |
Deferred cash payments | 67.0 |  | $ 37.7 |  | $ 37.7 |  |
Net tangible assets acquired | 10.7 |  |  |  |  |  |
Inventory | 6.7 |  |  |  |  |  |
Cash | 1.4 |  |  |  |  |  |
Intangible assets acquired | 31.0 |  |  |  |  |  |
Goodwill | $ 59.7 |  |  |  |  |  |
Weighted average useful life | 6 years 7 months 6 days |  |  |  |  |  |
Schölly | Manufacturing process technology |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 28.0 |  |  |  |  |  |
Schölly | Non-compete provisions |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 3.0 |  |  |  |  |  |

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