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Restructuring Activities (Tables)
12 Months Ended
Dec. 31, 2022
Restructuring and Related Activities [Abstract]  
Summary of Transformation Initiative Costs
Year Ended December 31, 2022
Advisory
Services
Global
Workplace
Solutions
Real Estate
Investments
CorporateConsolidated
Employee separation benefits$32,594 $19,961 $9,761 $19,198 $81,514 
Lease exit costs9,695 2,916 — — 12,611 
Professional fees and other3,446 5,040 2,738 12,185 23,409 
Subtotal45,735 27,917 12,499 31,383 117,534 
Depreciation expense5,564 3,258 — — 8,822 
Total$51,299 $31,175 $12,499 $31,383 $126,356 
As part of these initiatives, we incurred the following costs, primarily in cash, for the year ended December 31, 2020 (dollars in thousands):
Year Ended December 31, 2020
Advisory
Services
Global
Workplace
Solutions
Real Estate
Investments
Consolidated
Employee separation benefits$57,550 $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 $175,840 
Schedule of Liability Balance Associated with major Cash-based Charges
The following table shows ending liability balance associated with major cash-based charges (dollars in thousands):
Employee separation benefitsProfessional fees
Balance at January 1, 2022$— $— 
Expense incurred81,514 23,409 
Payments made(44,500)(12,809)
Balance at December 31, 2022$37,014 $10,600