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ACQUISITIONS AND INVESTMENTS - Schedule Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Identifiable intangible assets | $ 50.9 | $ 51.0 |
Goodwill | 4,129.7 | 4,184.0 | $ 3,974.3
2017 Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Cash |  | 4.3 |
Accounts receivable and other current assets |  | 3.2 |
Other assets |  | 0.4 |
Identifiable intangible assets |  | 51.0 |
Goodwill |  | 92.4 |
Total assets acquired |  | 151.3 |
Other current liabilities |  | (5.1) |
Other liabilities |  | (10.9) |
Non-controlling interest |  | 0.0 |
Net assets acquired |  | $ 135.3 |
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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