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Restructuring (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2017 USD ($) | Oct. 02, 2016 USD ($) | Oct. 01, 2017 USD ($) Employee | Oct. 02, 2016 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 69 | $ 62 | $ 165 | $ 296
Medical Devices [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring Charge, Net of Accrual Adjustment |  |  | 476 |
Restructuring charges | 187 |  | 566 |
Restructuring Reserve, Accrual Adjustment |  |  | (90) |
Restructuring charges recorded to date | 1,800 |  | $ 1,800 |
Period of workforce reduction |  |  | 15 months |
Number of positions eliminated | Employee |  |  | 2,200 |
Number of positions eliminated and receiving severance | Employee |  |  | 1,700 |
Medical Devices [Member] | Cost of Sales [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 29 |  | $ 46 |
Medical Devices [Member] | Other Income Expense Net [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 89 |  | 265 |
Medical Devices [Member] | Asset Write-off [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | 140 |
Restructuring Reserve, Accrual Adjustment |  |  | 0 |
Medical Devices [Member] | Other Restructuring [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | 426 |
Restructuring Reserve, Accrual Adjustment |  |  | 0 |
Medical Devices [Member] | Employee Severance [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring estimated cost | 400 |  | 400 |
Restructuring charges |  |  | 0 |
Restructuring Reserve, Accrual Adjustment |  |  | (90) |
Medical Devices [Member] | Minimum [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring estimated cost | 2,000 |  | $ 2,000 |
Positions eliminated (as a percent) |  |  | 4.00% |
Medical Devices [Member] | Maximum [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring estimated cost | $ 2,400 |  | $ 2,400 |
Positions eliminated (as a percent) |  |  | 6.00% |

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