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Supplementary Data Accrued Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Accrued Liabilities [Abstract] |  |  |
Salaries, benefits and related expenses |  | $ 441.9 | $ 504.6
Interest |  | 40.9 | 43.6
Acquisition obligations |  | 32.8 | 47.9
Restructuring charges |  | 22.4 | 69.5
Office and related expenses |  | 18.2 | 25.5
Income Taxes payable |  | 26.2 | 50.6
Other |  | 97.4 | $ 90.7
Total Accrued Liabilities | $ 832.4 | $ 679.8 |

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