CATERPILLAR INC
| 2013 | FY |
Inventories (principally using the LIFO method) are comprised of the following:
December 31,
(Millions of dollars)
2013
2012
2011
Raw materials
$
2,966
$
3,573
$
3,766
Work-in-process
2,589
2,920
2,959
Finished goods
6,785
8,767
7,562
Supplies
285
287
257
Total inventories
$
12,625
$
15,547
$
14,544
us-gaap:ScheduleOfInventoryCurrentTableTextBlock