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Legal Proceedings (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 31, 2014 claim | Dec. 31, 2017 USD ($) patient claimant | Oct. 01, 2017 USD ($) | Jul. 02, 2017 USD ($) | Apr. 02, 2017 USD ($) | Jan. 01, 2017 USD ($) | Oct. 02, 2016 USD ($) | Jul. 03, 2016 USD ($) | Apr. 03, 2016 USD ($) | Dec. 31, 2017 patents patient claimant | Jan. 03, 2016 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restructuring charge, after tax | $ |  | $ 237 | $ 136 | $ 101 | $ 121 | $ 251 | $ 76 | $ 97 | $ 120 |  |
Litigation expense | $ |  | $ 645 | $ 118 | $ 493 |  | $ 96 | $ 55 | $ 600 | $ 66 |  | $ 141
Xarelto |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 22,900 |  |  |  |  |  |  |  | 22,900 |
ASR |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 2,000 |  |  |  |  |  |  |  | 2,000 |
Pinnacle Acetabular Cup System |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 10,000 |  |  |  |  |  |  |  | 10,000 |
Risperdal |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 13,700 |  |  |  |  |  |  |  | 13,700 |
Pelvic Meshes |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 53,600 |  |  |  |  |  |  |  | 53,600 |
Baby Powder |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 6,610 |  |  |  |  |  |  |  | 6,610 |
Invokana [Member] |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 1,100 |  |  |  |  |  |  |  | 1,100 |
Pending Litigation | Talc [Member] |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Class actions filed | claim | 2 |  |  |  |  |  |  |  |  |  |
DePuy ASR U.S. | Settled Litigation |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of patients in settlement | patient |  | 10,000 |  |  |  |  |  |  |  | 10,000 |
Medinol Ltd. |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Patents allegedly infringed | patents |  |  |  |  |  |  |  |  |  | 4 |

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