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PROPERTY, EQUIPMENT AND SOFTWARE (Tables)
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Summary of Property, Equipment and Software
Property, equipment and software at December 31 consists of: 
(in millions)20212020
Computer and communications software and equipment$1,293.5 $1,113.1 
Buildings and improvements472.0 457.5 
Leasehold improvements196.4 169.2 
Furniture and other equipment205.6 193.3 
Land25.7 37.2 
2,193.2 1,970.3 
Less accumulated depreciation and amortization1,457.0 1,274.9 
Total$736.2 $695.4