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Property | 12 Months Ended
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Dec. 31, 2024
Property, Plant and Equipment, Net [Abstract] |
Property | PROPERTY A summary of the property accounts at December 31, 2024 and 2023 is presented below:
(in millions) |  | 2024 |  | 2023 |  | Estimated Useful Life
Building and building improvements |  | $ | 130.7 |  |  | $ | 130.7 |  |  | 1 - 10 years
Leasehold improvements |  | 147.1 |  |  | 143.7 |  |  | 2 - 20 years
Furniture, fixtures and equipment |  | 432.6 |  |  | 413.3 |  |  | 1 - 7 years
Software and software development costs |  | 700.1 |  |  | 654.9 |  |  | 2 - 8 years
Total property |  | 1,410.5 |  |  | 1,342.6 |  |  |
Less accumulated depreciation and amortization |  | (1,024.3) |  |  | (933.1) |  |  |
Property, net |  | $ | 386.2 |  |  | $ | 409.5 |  |  |

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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