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Transformation Initiatives (Tables)
12 Months Ended
Dec. 31, 2020
Restructuring and Related Activities [Abstract]  
Summary of Transformation Initiative Costs
As part of these initiatives, we incurred the following costs, primarily in cash, for the year ended December 31, 2020 (dollars in thousands):

Advisory
Services
Global
Workplace
Solutions
Real Estate
Investments
Consolidated
Employee separation benefits$57,550 $31,083 $2,444 $91,077 
Lease termination costs43,225 4,586 — 47,811 
Professional fees and other13,212 2,510 538 16,260 
Subtotal113,987 38,179 2,982 155,148 
Depreciation expense14,184 166 6,342 20,692 
Total$128,171 $38,345 $9,324 $175,840