Inventories (Details) (USD $) In Millions | Sep. 30, 2011 | Dec. 31, 2010 |
|---|---|---|
| LIFO method related items [Abstract] | ||
| LIFO Inventory Amount | $ 145 | $ 108 |
| LIFO Reserve | 42 | 34 |
| Inventories, net [Abstract] | ||
| Finished products and parts | 1,675 | 1,369 |
| Raw materials and supplies | 646 | 496 |
| Work in process | 91 | 75 |
| Total | 2,412 | 1,940 |
| Obsolescence reserves | $ 107 | $ 88 |