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Property and Equipment | 12 Months Ended
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Dec. 31, 2020
Property, Plant and Equipment [Abstract] |
Property and Equipment. | 7. Property and Equipment Net property and equipment at December 31, 2020 and 2019 consisted of the following (in millions):
|  | 2020 |  | 2019
Computer hardware and software |  | $ | 201.6 |  |  | $ | 180.2 |
Furniture, fixtures and equipment |  | 28.0 |  |  | 26.8 |
Leasehold improvements |  | 28.9 |  |  | 24.7 |
Work-in-progress |  | 4.8 |  |  | 7.0 |
|  | 263.3 |  |  | 238.7 |
Less: accumulated depreciation |  | (193.9) |  |  | (165.0) |
|  | $ | 69.4 |  |  | $ | 73.7 |
The Company has capitalized costs related to its various technology initiatives. At December 31, 2020, the net book value of computer software was $34.2 million, which included work-in-progress of $4.8 million. At December 31, 2019, the total net book value of computer software was $34.8 million, which included work-in-progress of $6.4 million. The following table summarizes the presentation of depreciation expense within the accompanying consolidated statements of operations for the years ended December 31, 2020, 2019 and 2018:
|  | 2020 |  | 2019 |  | 2018
Selling, general and administrative expenses |  | $ | 33.4 |  |  | $ | 29.8 |  |  | $ | 28.8 |
Costs of services |  | 4.6 |  |  | 10.3 |  |  | 7.7 |
|  | $ | 38.0 |  |  | $ | 40.1 |  |  | $ | 36.5 |

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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