| | | | | | | | | | | | | The following table provides the components of Property, plant and equipment: | | | Useful Lives |
| | As of December 31, | (MILLIONS OF DOLLARS) | | (Years) |
| | 2013 |
| | 2012 |
| Land | | — |
| | $ | 557 |
| | $ | 566 |
| Buildings | | 33-50 |
| | 10,055 |
| | 10,643 |
| Machinery and equipment | | 8-20 |
| | 10,050 |
| | 9,939 |
| Furniture, fixtures and other | | 3-12 1/2 |
| | 3,914 |
| | 3,860 |
| Construction in progress | | — |
| | 1,102 |
| | 957 |
| | | | | 25,678 |
| | 25,965 |
| Less: Accumulated depreciation | | | | 13,281 |
| | 12,752 |
| Property, plant and equipment(a) | | | | $ | 12,397 |
| | $ | 13,213 |
|
| | (a) | The decrease in total property, plant and equipment is primarily due to depreciation, disposals, impairments and the impact of foreign exchange, partially offset by capital additions. |
|