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ACQUISITIONS AND INVESTMENTS - Schedule Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Identifiable intangible assets | $ 92.0 | $ 50.9 |
Goodwill | 4,308.3 | 4,129.7 | $ 4,184.0
2019 Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Cash | 5.5 |  |
Accounts receivable and other current assets | 5.5 |  |
Other assets | 1.5 |  |
Identifiable intangible assets | 92.0 |  |
Goodwill | 197.4 |  |
Total assets acquired | 301.9 |  |
Other current liabilities | (5.1) |  |
Other liabilities | (18.4) |  |
Non-controlling interest | 0.0 |  |
Net assets acquired | $ 278.4 |  |
2018 Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Cash |  | 1.6 |
Accounts receivable and other current assets |  | 4.4 |
Other assets |  | 0.3 |
Identifiable intangible assets |  | 50.9 |
Goodwill |  | 89.3 |
Total assets acquired |  | 146.5 |
Other current liabilities |  | (2.9) |
Other liabilities |  | (3.8) |
Non-controlling interest |  | (1.8) |
Net assets acquired |  | $ 138.0 |

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