Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 18, 2020	Jun. 28, 2019
Document and Entity Information
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2019
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	DELAWARE
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
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		64,054,138
Entity Public Float			$ 7,975,902,822
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Central Index Key	0000896622
Amendment Flag	false