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Property (Tables)
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment, Net [Abstract]  
Summary of the Property Accounts
A summary of the property accounts at December 31, 2021 and 2020 is presented below:
(in millions)20212020Estimated Useful Life
Land and land improvements$— $7.7 
10 - 20 years (1)
Building and building improvements132.3 167.1 1 - 10 years
Leasehold improvements232.3 225.5 3 - 19 years
Furniture, fixtures and equipment519.1 492.9 2 - 7 years
Software and software development costs661.1 647.2 2 - 4 years
Total property1,544.8 1,540.4 
Less accumulated depreciation and amortization(1,039.5)(961.2)
Property, net$505.3 $579.2 
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(1) Estimated useful life applies only to land improvements.
In November 2021, the company sold a building and land in Chicago for $39.3 million and recognized a gain of $30.4 million. The gain was recognized in other non-operating income in the consolidated statements of income.