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Property and Equipment, Net (Tables) | 12 Months Ended
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Dec. 31, 2017
Property, Plant and Equipment [Abstract] |
Components of Property and Equipment, Net | Our property and equipment consists of the following:
| December 31,
| 2017 |  | 2016
| (In thousands)
Capitalized software development | $ | 2,111,262 |  |  | $ | 1,606,960 |
Computer equipment | 658,031 |  |  | 665,652 |
Furniture and other equipment | 84,509 |  |  | 72,811 |
Buildings and leasehold improvements | 282,865 |  |  | 241,713 |
Land | 129,049 |  |  | 130,812 |
| 3,265,716 |  |  | 2,717,948 |
Less: accumulated depreciation | (2,055,720 | ) |  | (1,575,879 | )
Projects in progress (1) | 365,262 |  |  | 252,835 |
Property and equipment, net | $ | 1,575,258 |  |  | $ | 1,394,904 |
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(1) | At December 31, 2017 and 2016, projects in progress included approximately $111 million and $38 million of project construction costs capitalized pursuant to build-to-suit lease guidance, which were incurred by the landlord, as property and equipment, net with a related construction financing obligation in other long-term liabilities. The building assets will begin depreciating when the costs incurred related to the build out of the office space are complete and ready for their intended use, which is expected to be in 2018.

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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