| **Inventories - (Tables)**          | 12 Months Ended                                                                                                                                                                                                                                                                              |
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| **Inventory Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                         |
| Inventories, net of reserves        | Inventories, net of reserves of $319 million and $382 million in 2014 and 2013, respectively, are comprised of the following at December 31: 2014 2013Finished goods$3,644 $3,438Work in process227 215Raw materials203 231Total inventories$4,074 $3,884 |

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| - Definition
Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5
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