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Business Combinations and Divestitures (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Jan. 26, 2017 | Apr. 02, 2017 | Apr. 03, 2016 | Jan. 01, 2017
Business Acquisition [Line Items] |  |  |  |
Payments to acquire businesses |  | $ 4,852 | $ 5 |
Goodwill |  | 24,844 |  | $ 22,805
Codman Neurosurgery [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Proceeds from Divestiture of Businesses |  | 1,000 |  |
Medical Devices [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 13,646 |  | $ 11,702
AMO [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Weighted average useful life |  | 14 years 6 months |  |
AMO [Member] | Medical Devices [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to acquire businesses |  | $ 4,400 |  |
Finite-lived Intangible Assets Acquired |  | 2,300 |  |
Goodwill |  | 1,900 |  |
Actelion [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to acquire businesses | $ 30,000 |  |  |
Business Acquisition, Share Price | $ 280 |  |  |
Idorsia [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 16.00% |  |  |
Convertible Note, Equity Interest, Percentage | 16.00% |  |  |
Inventories [Member] | Codman Neurosurgery [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent |  | 65 |  |
Property, Plant and Equipment [Member] | Codman Neurosurgery [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent |  | 19 |  |
Goodwill [Member] | Codman Neurosurgery [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent |  | $ 106 |  |

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