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Legal Proceedings (Details) $ in Millions |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 20, 2020 USD ($) | Dec. 29, 2019 USD ($) patient claimant | Sep. 29, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 30, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jul. 01, 2018 USD ($) | Apr. 01, 2018 USD ($) | Dec. 29, 2019 USD ($) patient claimant | Oct. 31, 2019 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restructuring charge, after tax | $ |  | $ 214 | $ 106 | $ 116 | $ 75 | $ 190 | $ 162 | $ 152 | $ 81 |  |
Litigation expense | $ |  | $ 264 | $ 4,000 | $ 409 | $ 423 | $ 1,288 |  | $ 703 |  |  |
Xarelto |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 29,000 |  |  |  |  |  |  |  | 29,000 |
ASR |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 1,100 |  |  |  |  |  |  |  | 1,100 |
Pinnacle Acetabular Cup System |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 10,300 |  |  |  |  |  |  |  | 10,300 |
Risperdal |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 11,900 |  |  |  |  |  |  |  | 11,900 |
Pelvic Meshes |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 17,600 |  |  |  |  |  |  |  | 17,600 |
Invokana |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 400 |  |  |  |  |  |  |  | 400 |
Physiomesh |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 3,300 |  |  |  |  |  |  |  | 3,300 |
Talc |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 17,900 |  |  |  |  |  |  |  | 17,900 |
Opiods [Member] |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs |  | 2,800 |  |  |  |  |  |  |  | 2,800 |
Pending Litigation |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss | $ |  |  |  |  |  |  |  |  |  |  | $ 4,000
Judicial Ruling |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value | $ |  | $ 8,000 |  |  |  |  |  |  |  |  |
Oklahoma Attorney General VS. Johnson And Johnson And JPI [Member] | Settled Litigation |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value | $ |  |  |  |  |  |  |  |  |  | $ 465 |
Oklahoma Attorney General VS. Johnson And Johnson And JPI [Member] | Judicial Ruling |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value | $ |  |  |  |  |  |  |  |  |  | $ 572 |
DePuy ASR U.S. | Settled Litigation |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of patients in settlement | patient |  | 10,000 |  |  |  |  |  |  |  | 10,000 |
Baby Powder | Judicial Ruling | Damages from Product Defects |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ |  |  |  |  |  |  |  |  |  | $ 4,700 |
Subsequent Event | Judicial Ruling |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value | $ | $ 344 |  |  |  |  |  |  |  |  |  |

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