Property, plant and equipment, including capital leases, consist of (millions): | | | December 31, | | Estimated | | | | 2013 | | 2012 | | Useful Lives | | | | | | | | | | | | Land(a) | | $ | 506 | | $ | 505 | | | | | Buildings and improvements | | | 2,918 | | | 2,851 | | 7 to 30 years | | Capitalized software costs | | | 1,990 | | | 1,869 | | 3 to 7 years | | Furniture, fixtures and other equipment(b) | | | 3,600 | | | 3,541 | | 3 to 10 years | | | | | 9,014 | | | 8,766 | | | | | Less accumulated depreciation | | | (5,189) | | | (4,824) | | | | | Total | | $ | 3,825 | | $ | 3,942 | | | | | ____________ | | | | | | | | | | | | | | | | | | | | | (a) | Land is not depreciated. | | | | | | | | | | (b) | Includes $339 million and $396 million of construction in progress as of December 31, 2013 and 2012, respectively. |
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