Property and equipment, at cost, consisted of the following (in millions): | | | | | | | | | | December 31, | | 2013 | | 2012 | Gross property and equipment (1): | | | | Land and buildings | $ | 4,584 |
| | $ | 2,966 |
| Equipment and internal-use software (2) | 9,274 |
| | 6,228 |
| Other corporate assets | 231 |
| | 174 |
| Construction in progress | 720 |
| | 214 |
| Gross property and equipment | 14,809 |
| | 9,582 |
| Total accumulated depreciation (1) | 3,860 |
| | 2,522 |
| Total property and equipment, net | $ | 10,949 |
| | $ | 7,060 |
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___________________ | | (1) | Excludes the original cost and accumulated depreciation of fully-depreciated assets. |
| | (2) | Includes internal-use software of $1.1 billion and $866 million as of December 31, 2013 and 2012. |
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