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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Short Term Investments
Maturity of the deposit		2 years
Penalty for early redemption		$ 0
RETIREMENT OF TREASURY SHARES
Treasury stock shares retired	20
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
INCOME TAXES
Expected distribution of foreign earnings		$ 0
Tax cost of repatriation included in effective tax rate		$ 0
Minimum
Short Term Investments
Redemption period		35 days
Maximum
Short Term Investments
Redemption period		90 days
Accounting principle change
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Cumulative pre-tax effect		$ 7,400
Effect of change on net income attributable to AptarGroup		$ 4,800
Effect of change on net income attributable to AptarGroup per diluted share		$ 0.08

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