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ACQUISITIONS - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed for Annax (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Mar. 22, 2018
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 8,360.6 | $ 2,396.5 |
Annax GmbH |  |  |
Business Acquisition [Line Items] |  |  |
Current assets, net of cash acquired |  |  | $ 32.8
Property, plant & equipment |  |  | 0.7
Goodwill |  |  | 38.5
Other intangible assets |  |  | 11.7
Total assets acquired |  |  | 83.7
Total liabilities assumed |  |  | (55.1)
Net assets acquired |  |  | $ 28.6

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