Contingencies (Details) $ in Millions, ₪ in Billions						1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Jul. 13, 2021 complaint tender lawsuit	May 31, 2019 individual	Jan. 16, 2019 defendant genericPrescriptionPharmaceutical	Jun. 28, 2017 USD ($) genericPrescriptionPharmaceutical individual case $ / ₪	Jun. 28, 2017 ILS (₪) genericPrescriptionPharmaceutical individual case $ / ₪	Sep. 30, 2020 lawsuit	Mar. 28, 2020 case	Jul. 03, 2021 USD ($) case individual complaint defendant appeal genericPrescriptionPharmaceutical claim retailer class lawsuit	Dec. 31, 2018 case brand	Dec. 31, 2017 USD ($) case	May 31, 2021 policyPeriod	Dec. 31, 2020 USD ($)	Dec. 15, 2020 manufacturer brand pharmaceuticalCompany	Dec. 14, 2020 manufacturer	Dec. 11, 2020 manufacturer	Sep. 26, 2020 manufacturer	Sep. 04, 2020 manufacturer	Aug. 27, 2020 manufacturer	Jul. 14, 2020 brand manufacturer case	Jul. 09, 2020 pharmaceuticalCompany	Jun. 10, 2020 employee plaintiffGroup pharmaceuticalProduct manufacturer	Jun. 09, 2020 manufacturer	May 31, 2020 healthPlan individual manufacturer	Mar. 01, 2020 defendant	Dec. 27, 2019 defendant	Dec. 23, 2019 defendant	Dec. 16, 2019 defendant	Dec. 11, 2019 defendant	Nov. 14, 2019 class	Jul. 18, 2019 manufacturer individual healthPlan	Apr. 30, 2019 genericPrescriptionPharmaceutical pharmaceuticalProduct manufacturer	Dec. 21, 2018 genericPrescriptionPharmaceutical manufacturer	Aug. 03, 2018 manufacturer genericPrescriptionPharmaceutical	Jul. 31, 2018 individual	Jan. 22, 2018 manufacturer genericPrescriptionPharmaceutical supermarket	Jun. 30, 2017 case	Jun. 21, 2017 genericPrescriptionPharmaceutical individual class
Loss Contingencies [Line Items]
Number of putative classes | class								3																					3								3
Number of sets of class action complaints | complaint								2
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical																																					6
Number of individuals | individual																																					11
Number of current or former directors and officers | individual																																					11
Loss accrual for litigation contingencies | $								$ 65.0
Insurance recovery receivable | $								56.2
Insurance coverage available to defend and satisfy judgments, number of policy periods | policyPeriod											1
Level 3
Loss Contingencies [Line Items]
Guaranty liability | $								$ 0.6		$ 13.8		$ 13.2
States' May 2019 Case Alleging Conspiracy (which does not Name Perrigo a Defendant)
Loss Contingencies [Line Items]
Number of products included in expedited cases | brand																			120
Number of manufacturers																			35
Overarching Conspiracy Class Actions
Loss Contingencies [Line Items]
Number of manufacturers																															27
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical																															135
Number of formulations of products manufactured by the Company | genericPrescriptionPharmaceutical																															2
Number of products manufactured by the Company | pharmaceuticalProduct																															1
Number of cases included in expedited schedule | case																			0
Price-Fixing Lawsuit, Supermarket Chains
Loss Contingencies [Line Items]
Number of manufacturers														45																					35
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical																																			31
Number of supermarket chains | supermarket																																			3
Price-Fixing Lawsuit, Supermarket Chains, Amended Complaint
Loss Contingencies [Line Items]
Number of manufacturers																																39
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical																																33
Price-fixing Lawsuit, Managed Care Organization
Loss Contingencies [Line Items]
Number of manufacturers																																	27
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical																																	17
Price-fixing Lawsuit, Health Insurance Carrier
Loss Contingencies [Line Items]
Number of manufacturers																						25
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical			30
Number of defendants | defendant			30
Price-fixing Lawsuit, Healthcare Service Company
Loss Contingencies [Line Items]
Number of co-defendants | defendant																												38
Price-Fixing Lawsuit, Suffolk County of New York
Loss Contingencies [Line Items]
Number of manufacturers																		35
Price-Fixing Lawsuit, Drug Wholesaler and Distributor
Loss Contingencies [Line Items]
Number of manufacturers																	39
Price-fixing Lawsuit, Medicare Advantage Claims Recovery Company
Loss Contingencies [Line Items]
Number of co-defendants | defendant																											39
Price-Fixing Lawsuit, Drugstore Chain
Loss Contingencies [Line Items]
Number of manufacturers													45		45
Number of products manufactured by the Company | brand													63
Number of other pharmaceutical companies | pharmaceuticalCompany																				39
Price-fixing Lawsuit, Healthcare Management Organization
Loss Contingencies [Line Items]
Number of co-defendants | defendant																									25
Price-fixing Lawsuit, Several Counties in New York
Loss Contingencies [Line Items]
Number of other pharmaceutical companies | pharmaceuticalCompany													45
Number of co-defendants | defendant																										28
Price-fixing Lawsuit, Harris County of Texas
Loss Contingencies [Line Items]
Number of co-defendants | defendant																								29
Price-fixing Lawsuit, Health Plans
Loss Contingencies [Line Items]
Number of manufacturers																														53
Number of health plans | healthPlan																							7							87
Number of individuals | individual																							17							17
Number of dozens of manufacturers																							3
State Attorney General Complaint
Loss Contingencies [Line Items]
Number of manufacturers																					35
Number of generic prescription pharmaceuticals | pharmaceuticalProduct																					80
Number of additional states and territories | plaintiffGroup																					50
Number of former employees | employee																					1
Number of current employees | employee																					1
Canadian Class Action Complaint
Loss Contingencies [Line Items]
Number of manufacturers																29
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
Carmignac, First Manhattan and Similar Cases
Loss Contingencies [Line Items]
Number of cases with similar factual allegations | case								7
First Manhattan and Similar Cases
Loss Contingencies [Line Items]
Number of generic prescription pharmaceuticals | case								6
Mason Capital, Pentwater and Similar Cases
Loss Contingencies [Line Items]
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical								6
Number of cases with similar factual allegations | case								8
Number of current or former directors and officers | case								11
Harel Insurance and TIAA-CREF Cases
Loss Contingencies [Line Items]
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical								6
Number of individuals | individual																																		11
Number of cases with similar factual allegations | case								2
Number of current or former directors and officers | individual								13
Number of defendants added | defendant								2
Number of defendants dismissed without prejudice | individual																																		8
Blackrock Global Complaint
Loss Contingencies [Line Items]
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical								6
Other Cases Related to Events in 2015-2017
Loss Contingencies [Line Items]
Number of cases with similar factual allegations | case																																				1
Number of overlapped cases | case																																				3
Israel Elec. Corp. Employees' Educ. Fund v. Perrigo Company plc, et al.
Loss Contingencies [Line Items]
Number of generic prescription pharmaceuticals | genericPrescriptionPharmaceutical				6	6
Number of cases voluntarily dismissed | case				2	2
Number of current or former directors and officers | individual				11	11
Damages sought by plaintiff				$ 760.0	₪ 2.7
Foreign currency exchange rate, remeasurement | $ / ₪				0.28	0.28
Talcum Powder Litigation | Subsequent Event
Loss Contingencies [Line Items]
Number of lawsuits | lawsuit	44
Number of tenders accepted for a portion of the defense costs and liability from a retailer | tender	1
Ranitidine Litigation
Loss Contingencies [Line Items]
Number of master complaints | complaint								3
Number of master complaints naming the company | complaint								3
Number of appeals of master complaints | appeal								1
Number of appeals of personal injury claims | appeal								2
Ranitidine Litigation | Subsequent Event
Loss Contingencies [Line Items]
Number of personal injury lawsuits | complaint	245
In Israel (Cases Related to Events in 2015-2017)
Loss Contingencies [Line Items]
Number of cases | case									3
Number of cases voluntarily dismissed | case									1	1
Number of cases stayed | brand									1
In the United States (Cases Related to Irish Tax Events)
Loss Contingencies [Line Items]
Number of defendants | individual		3
Number of defendants added | individual		1
In Israel (Cases Related to Irish Tax Events)
Loss Contingencies [Line Items]
Number of cases stayed | case							2
Acetaminophen Litigation
Loss Contingencies [Line Items]
Number of lawsuits | lawsuit						1
Number of claims for indemnification or defense | claim								16
Number of retailers | retailer								10