Cover - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 14, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	1-11846
Entity Registrant Name	AptarGroup, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-3853103
Entity Address, Address Line One	265 EXCHANGE DRIVE, 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
Title of 12(b) Security	Common Stock, $.01 par value
Trading Symbol	ATR
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 9,322,666,642
Entity Common Stock, Shares Outstanding		65,562,125
Documents Incorporated by Reference	Portions of the definitive Proxy Statement to be delivered to stockholders in connection with the Annual Meeting of Stockholders to be held May 4, 2022 are incorporated by reference into Part III of this report.
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Central Index Key	0000896622
Amendment Flag	false