| Document and Entity Information | Apr. 30, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Apr. 30, 2020 |
| Entity Registrant Name | AptarGroup, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-11846 |
| Entity Tax Identification Number | 36-3853103 |
| Entity Address, Address Line One | 265 Exchange Drive |
| Entity Address, Address Line Two | Suite 100 |
| Entity Address, City or Town | Crystal Lake |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60014 |
| City Area Code | 815 |
| Local Phone Number | 477-0424 |
| Entity Information, Former Legal or Registered Name | N/A |
| 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 | 0000896622 |
| Title of 12(b) Security | Common Stock, $.01 par value |
| Trading Symbol | ATR |
| Security Exchange Name | NYSE |
