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v3.20.4

Restructuring and Acquisition Charges (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and acquisition charges | $ 142.4 | $ 184.4 | $ 38.8
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | (14.8) | 28.4 | 7.4
Share-based Payment Arrangement, Noncash Expense | 36.7 | 28.0 | 0.0
Restructuring reserve [Roll Forward] |  |  |
Restructuring reserve, beginning balance | 36.5 | 15.1 | 21.3
Accruals | 120.5 | 128.0 | 31.4
Payments made | (112.0) | (106.6) | (37.6)
Restructuring reserve, ending balance | 45.0 | 36.5 | 15.1
Severance [Member] |  |  |
Restructuring reserve [Roll Forward] |  |  |
Restructuring reserve, beginning balance | 24.3 | 14.0 | 14.2
Accruals | 69.0 | 31.1 | 25.5
Payments made | (52.0) | (20.8) | (25.7)
Restructuring reserve, ending balance | 41.3 | 24.3 | 14.0
Lease Exit [Member] |  |  |
Restructuring reserve [Roll Forward] |  |  |
Restructuring reserve, beginning balance | 8.4 | 0.6 | 5.7
Accruals | 25.0 | 11.1 | 0.7
Payments made | (30.9) | (3.3) | (5.8)
Restructuring reserve, ending balance | 2.5 | 8.4 | 0.6
Other Restructuring and Acquisition Costs [Member] |  |  |
Restructuring reserve [Roll Forward] |  |  |
Restructuring reserve, beginning balance | 3.8 | 0.5 | 1.4
Accruals | 26.5 | 85.8 | 5.2
Payments made | (29.1) | (82.5) | (6.1)
Restructuring reserve, ending balance | 1.2 | 3.8 | 0.5
JLLContract Terminationand Other Charges Member |  |  |
Restructuring reserve [Roll Forward] |  |  |
Accruals | 51.5 | 96.9 | $ 5.9
HFF Acquisition [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Business Combination, Integration Related Costs | 75.9 | $ 115.1 |
Restructuring reserve [Roll Forward] |  |  |
Share-based Payment Arrangement, Expense | $ 100.0 |  |

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