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Segments of Business and Geographic Areas (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Jul. 01, 2012 | Jul. 03, 2011 | Jul. 01, 2012 | Jul. 03, 2011
Sales by segment of business |  |  |  |
Total | $ 16,475 | $ 16,597 | $ 32,614 | $ 32,770
Percentage Change | (0.70%) |  | (0.50%) |
United States [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 7,360 | 7,447 | 14,579 | 15,055
Percentage Change | (1.20%) |  | (3.20%) |
International [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 9,115 | 9,150 | 18,035 | 17,715
Percentage Change | (0.40%) |  | 1.80% |
Consumer [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 3,619 | 3,793 | 7,214 | 7,475
Percentage Change | (4.60%) |  | (3.50%) |
Consumer [Member] | United States [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 1,313 | 1,339 | 2,629 | 2,684
Percentage Change | (1.90%) |  | (2.00%) |
Consumer [Member] | International [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 2,306 | 2,454 | 4,585 | 4,791
Percentage Change | (6.00%) |  | (4.30%) |
Pharmaceutical [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 6,291 | 6,233 | 12,424 | 12,292
Percentage Change | 0.90% |  | 1.10% |
Pharmaceutical [Member] | United States [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 3,094 | 3,239 | 6,120 | 6,630
Percentage Change | (4.50%) |  | (7.70%) |
Pharmaceutical [Member] | International [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 3,197 | 2,994 | 6,304 | 5,662
Percentage Change | 6.80% |  | 11.30% |
Medical Devices and Diagnostics [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 6,565 | 6,571 | 12,976 | 13,003
Percentage Change | (0.10%) |  | (0.20%) |
Medical Devices and Diagnostics [Member] | United States [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | 2,953 | 2,869 | 5,830 | 5,741
Percentage Change | 2.90% |  | 1.60% |
Medical Devices and Diagnostics [Member] | International [Member] |  |  |  |
Sales by segment of business |  |  |  |
Total | $ 3,612 | $ 3,702 | $ 7,146 | $ 7,262
Percentage Change | (2.40%) |  | (1.60%) |

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