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Property (Tables)
12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment, Net [Abstract]  
Summary of the Property Accounts
A summary of the property accounts at December 31, 2022 and 2021 is presented below:
(in millions)20222021Estimated Useful Life
Building and building improvements$132.2 $132.3 1 - 10 years
Leasehold improvements224.8 232.3 3 - 19 years
Furniture, fixtures and equipment551.3 519.1 2 - 7 years
Software and software development costs692.4 661.1 2 - 4 years
Total property1,600.7 1,544.8 
Less accumulated depreciation and amortization(1,145.2)(1,039.5)
Property, net$455.5 $505.3