| Cover Page | Nov. 06, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Nov. 6, 2019 |
| Entity Registrant Name | Perrigo Company plc |
| Entity File Number | 001-36353 |
| Entity Incorporation, State or Country Code | L2 |
| Entity Address, Address Line One | The Sharp Building, |
| Entity Address, Address Line Two | Hogan Place, |
| Entity Address, City or Town | Dublin 2, |
| Entity Address, Country | IE |
| Entity Address, Postal Zip Code | D02 TY74 |
| Country Region | 353 |
| City Area Code | 1 |
| Local Phone Number | 7094000 |
| Title of 12(b) Security | Ordinary shares |
| Trading Symbol | PRGO |
| Security Exchange Name | NYSE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001585364 |
| Amendment Flag | false |
