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v3.21.2

Restructuring and Acquisition Charges (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Restructuring and Related Activities [Abstract] |  |  |  |
Restructuring and acquisition charges | $ (18.1) | $ (28.2) | $ (35.3) | $ (42.3)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | 1.1 | 0.6 | 1.0 | (7.6)
Share-based Payment Arrangement, Noncash Expense | 6.0 | 13.0 | 12.0 | 24.2
Restructuring reserve [Roll Forward] |  |  |  |
Restructuring reserve, beginning balance |  |  | 45.0 | 36.5
Restructuring charges |  |  | 22.3 | 25.7
Payments made |  |  | (48.6) | (43.5)
Restructuring reserve, ending balance | 18.7 | 18.7 | $ 18.7 | 18.7
Document Period End Date |  |  | Jun. 30, 2021 |
Severance [Member] |  |  |  |
Restructuring reserve [Roll Forward] |  |  |  |
Restructuring reserve, beginning balance |  |  | $ 41.3 | 24.3
Restructuring charges | (0.9) | 7.0 | 0.9 | 8.3
Payments made |  |  | (26.4) | (16.0)
Restructuring reserve, ending balance | 15.8 | 16.6 | 15.8 | 16.6
Contract Termination [Member] |  |  |  |
Restructuring reserve [Roll Forward] |  |  |  |
Restructuring reserve, beginning balance |  |  | 2.5 | 8.4
Restructuring charges |  |  | 4.9 | 6.7
Payments made |  |  | (6.4) | (13.5)
Restructuring reserve, ending balance | 1.0 | 1.6 | 1.0 | 1.6
Lease Exit [Member] |  |  |  |
Restructuring reserve [Roll Forward] |  |  |  |
Restructuring charges | 11.9 | 7.6 | 21.4 | 17.4
Other Restructuring [Member] |  |  |  |
Restructuring reserve [Roll Forward] |  |  |  |
Restructuring reserve, beginning balance |  |  | 1.2 | 3.8
Restructuring charges |  |  | 16.5 | 10.7
Payments made |  |  | (15.8) | (14.0)
Restructuring reserve, ending balance | 1.9 | 0.5 | 1.9 | 0.5
HFF Acquisition [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Business Combination, Integration Related Costs | $ 12.4 | $ 20.1 | $ 23.9 | $ 41.4

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