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ACQUISITIONS AND INVESTMENTS - Schedule Assets and Liabilities (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Business Acquisition [Line Items] |  |  |
Identifiable intangible assets | $ 1,094.1 | $ 59.5 |
Goodwill | 6,258.1 | 4,495.8 | $ 4,308.3
Acquired goodwill | 1,842.0 | 58.3 |
2021 Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Cash | 5.2 |  |
Accounts receivable and other current assets | 43.1 |  |
Other assets | 26.6 |  |
Identifiable intangible assets | 1,094.1 |  |
Goodwill | 1,842.7 |  |
Total assets acquired | 3,011.7 |  |
Other current liabilities | (27.2) |  |
Other liabilities | (43.7) |  |
Net assets acquired | 2,940.8 |  |
Acquired goodwill | $ 1,400.0 |  |
2020 Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Cash |  | 9.7 |
Accounts receivable and other current assets |  | 2.5 |
Other assets |  | 2.7 |
Identifiable intangible assets |  | 59.5 |
Goodwill |  | 58.3 |
Total assets acquired |  | 132.7 |
Other current liabilities |  | (6.4) |
Other liabilities |  | (15.0) |
Net assets acquired |  | $ 111.3 |

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