CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net Sales	$ 759,153	$ 701,278	$ 2,180,011	$ 2,188,399
Operating Expenses:
Cost of sales (exclusive of depreciation and amortization shown below)	479,672	444,237	1,372,630	1,382,810
Selling, research & development and administrative	121,850	111,559	371,407	346,526
Depreciation and amortization	55,179	49,218	162,414	144,574
Restructuring initiatives	3,415	6,019	15,585	17,286
Total Operating Expenses	660,116	611,033	1,922,036	1,891,196
Operating Income	99,037	90,245	257,975	297,203
Other (Expense) Income:
Interest expense	(8,851)	(8,898)	(25,973)	(26,868)
Interest income	249	957	599	3,738
Equity in results of affiliates	(256)	238	(1,383)	152
Miscellaneous, net	(1,040)	(269)	(3,375)	148
Total Other Income (Expense)	(9,898)	(7,972)	(30,132)	(22,830)
Income before Income Taxes	89,139	82,273	227,843	274,373
Provision for Income Taxes	25,404	25,504	66,998	80,684
Net Income	63,735	56,769	160,845	193,689
Net Income Attributable to Noncontrolling Interests	(19)	(19)	(37)	(20)
Net Income Attributable to AptarGroup, Inc.	$ 63,716	$ 56,750	$ 160,808	$ 193,669
Net Income Attributable to AptarGroup, Inc. per Common Share:
Basic (in dollars per share)	$ 0.99	$ 0.89	$ 2.50	$ 3.05
Diluted (in dollars per share)	$ 0.95	$ 0.85	$ 2.42	$ 2.93
Average Number of Shares Outstanding:
Basic (in shares)	64,562	64,010	64,278	63,485
Diluted (in shares)	66,922	66,702	66,483	66,163
Dividends per Common Share (in dollars per share)	$ 0.36	$ 0.36	$ 1.08	$ 1.06