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Contingencies - Securities Litigation (Details) $ in Millions, ₪ in Billions |  | 6 Months Ended | 12 Months Ended |  |  |  |
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Jun. 28, 2017 ILS (₪) individual case genericPrescriptionPharmaceutical $ / ₪ | Jun. 28, 2017 USD ($) individual case genericPrescriptionPharmaceutical $ / ₪ | Jul. 02, 2022 genericPrescriptionPharmaceutical case defendant lawsuit class individual | Dec. 31, 2019 case | Dec. 31, 2018 brand case | Dec. 31, 2017 case | Nov. 14, 2019 class | Jul. 31, 2018 individual | Jun. 30, 2017 case | Jun. 21, 2017 individual genericPrescriptionPharmaceutical class
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of classes | class |  |  | 3 |  |  |  | 3 |  |  | 3
Number of current or former directors and officers | individual |  |  |  |  |  |  |  |  |  | 11
Number of individuals | individual |  |  |  |  |  |  |  |  |  | 11
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical |  |  |  |  |  |  |  |  |  | 6
Highfields Capital I LP, et al. v. Perrigo Company plc, et al. |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases alleging only state law claims | lawsuit |  |  | 1 |  |  |  |  |  |  |
Mason Capital, Pentwater and Similar Cases |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of current or former directors and officers |  |  | 11 |  |  |  |  |  |  |
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical |  |  | 6 |  |  |  |  |  |  |
Number of cases with similar factual allegations |  |  | 8 |  |  |  |  |  |  |
Harel Insurance and TIAA-CREFF Cases |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of current or former directors and officers | individual |  |  | 13 |  |  |  |  |  |  |
Number of individuals | individual |  |  |  |  |  |  |  | 11 |  |
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical |  |  | 6 |  |  |  |  |  |  |
Number of cases with similar factual allegations |  |  | 2 |  |  |  |  |  |  |
Number of defendants added | defendant |  |  | 2 |  |  |  |  |  |  |
Number of defendants dismissed without prejudice | individual |  |  |  |  |  |  |  | 8 |  |
Other Cases Related to Events in 2015-2017 |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases with similar factual allegations |  |  |  |  |  |  |  |  | 1 |
Number of overlapped cases |  |  |  |  |  |  |  |  | 3 |
Blackrock Global Complaint |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical |  |  | 6 |  |  |  |  |  |  |
First Manhattan and Similar Cases |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of generic prescription pharmaceuticals |  |  | 6 |  |  |  |  |  |  |
Israel Elec. Corp. Employees' Educ. Fund v. Perrigo Company plc, et al. |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of current or former directors and officers | individual | 11 | 11 |  |  |  |  |  |  |  |
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical | 6 | 6 |  |  |  |  |  |  |  |
Number of cases dismissed | 2 | 2 |  |  |  |  |  |  |  |
Preliminary class damages | ₪ 2.7 | $ 760.0 |  |  |  |  |  |  |  |
Foreign currency exchange rate, remeasurement | $ / ₪ | 0.28 | 0.28 |  |  |  |  |  |  |  |
Carmignac, First Manhattan and Similar Cases |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases alleging only state law claims | lawsuit |  |  | 7 |  |  |  |  |  |  |
In Israel (Cases Related to Events in 2015-2017) |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases |  |  |  |  | 3 |  |  |  |  |
Number of cases dismissed |  |  |  |  | 1 | 1 |  |  |  |
Number of cases stayed | brand |  |  |  |  | 1 |  |  |  |  |
In Israel (Cases Related to Irish Tax Events) |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases stayed |  |  |  | 2 |  |  |  |  |  |

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