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Business Combinations and Divestitures (Details) - USD ($) |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 16, 2017 | Jan. 26, 2017 | Jul. 02, 2017 | Apr. 02, 2017 | Jul. 03, 2016 | Jul. 02, 2017 | Jul. 03, 2016 | Jan. 01, 2017
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Payments to acquire businesses |  |  |  |  |  | $ 34,072,000,000 | $ 730,000,000 |
Goodwill |  |  | $ 31,234,000,000 |  |  | 31,234,000,000 |  | $ 22,805,000,000
Earnings before provision for taxes on income |  |  | 4,748,000,000 |  | $ 4,904,000,000 | 10,323,000,000 | 10,198,000,000 |
Asset write-downs |  |  |  |  |  | 270,000,000 | 187,000,000 |
Proceeds from Sale of Productive Assets |  |  |  |  |  | 125,000,000 | 685,000,000 |
Codman Neurosurgery [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Proceeds from Divestiture of Businesses |  |  |  | $ 1,000,000,000 |  |  |  |
API [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Proceeds from Sale of Productive Assets |  |  |  |  | 600,000,000 |  |  |
Medical Devices [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  | 13,714,000,000 |  |  | 13,714,000,000 |  | $ 11,702,000,000
Asset write-downs |  |  | 200,000,000 |  |  | 200,000,000 |  |
Inventories [Member] | Codman Neurosurgery [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent |  |  | 58,000,000 |  |  | 58,000,000 |  |
Property, Plant and Equipment [Member] | Codman Neurosurgery [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent |  |  | 33,000,000 |  |  | 33,000,000 |  |
Goodwill [Member] | Codman Neurosurgery [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent |  |  | 106,000,000 |  |  | 106,000,000 |  |
Actelion [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Business Acquisition, Share Price | $ 280 |  |  |  |  |  |  |
Payments to acquire businesses |  |  | 28,800,000,000 |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 97.86% |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Liabilities Incurred |  |  |  |  |  | 700,000,000 |  |
Goodwill | $ 5,986,000,000 |  |  |  |  |  |  |
Weighted average useful life | 9 years |  |  |  |  |  |  |
Business Combination, Revenue of acquiree since acquisition date, actual |  |  | 91,000,000 |  |  |  |  |
Business Acquisition, Net Income (Loss) of acquiree since acquisition date, actual |  |  | (116,000,000) |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  | 200,000,000 |  |  |  |  |
Actelion [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 4 years |  |  |  |  |  |  |
Actelion [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 10 years |  |  |  |  |  |  |
Actelion [Member] | In-process research and development |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Fair Value Inputs, Discount Rate | 9.00% |  |  |  |  |  |  |
Idorsia [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 9.90% |  |  |  |  |  |  |
Convertible Note, Equity Interest, Percentage |  | 22.10% |  |  |  |  |  |
Idorsia [Member] | Convertible Debt [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Long-term Debt | $ 500,000,000 |  |  |  |  |  |  |
Debt Instrument, Term | 10 years |  |  |  |  |  |  |
Idorsia [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 250,000,000 |  |  |  |  |  |  |
Idorsia [Member] | Debt Instrument, Redemption, Period One [Member] | Convertible Debt [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Convertible Note, Equity Interest, Percentage | 16.00% |  |  |  |  |  |  |
Debt Instrument, Restrictive Covenants, Shareholder Ownership Threshold, Percent | 20.00% |  |  |  |  |  |  |
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 |  |  |  | $ 4,400,000,000 |  |  |  |
Goodwill |  |  | 1,800,000,000 | 1,800,000,000 |  | $ 1,800,000,000 |  |
Total amortizable intangibles |  |  | $ 2,300,000,000 | $ 2,300,000,000 |  |  |  |

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