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Segments of Business and Geographic Areas (Details 2) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2012 | Jul. 03, 2011 | Jul. 01, 2012 | Jul. 03, 2011
Sales by geographic area |  |  |  |
Total | $ 16,475 | $ 16,597 | $ 32,614 | $ 32,770
Percent Change | (0.70%) |  | (0.50%) |
United States [Member] |  |  |  |
Sales by geographic area |  |  |  |
Total | 7,360 | 7,447 | 14,579 | 15,055
Percent Change | (1.20%) |  | (3.20%) |
Europe [Member] |  |  |  |
Sales by geographic area |  |  |  |
Total | 4,165 | 4,543 | 8,359 | 8,726
Percent Change | (8.30%) |  | (4.20%) |
Western Hemisphere, excluding U.S. [Member] |  |  |  |
Sales by geographic area |  |  |  |
Total | 1,728 | 1,543 | 3,442 | 2,979
Percent Change | 12.00% |  | 15.50% |
Asia-Pacific, Africa [Member] |  |  |  |
Sales by geographic area |  |  |  |
Total | $ 3,222 | $ 3,064 | $ 6,234 | $ 6,010
Percent Change | 5.20% |  | 3.70% |

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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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