STOCK-BASED COMPENSATION - Assumptions Used (Details) - Performance-Based RSUs - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award
Fair value per stock award (in dollars per share)	$ 116.17	$ 141.95	$ 171.63
Grant date stock price (in dollars per share)	$ 111.38	$ 114.52	$ 141.59
Aptar's stock price expected volatility	20.00%	20.20%	21.40%
Expected average volatility of peer companies	39.70%	41.70%	50.00%
Correlation assumption	33.30%	41.20%	58.10%
Risk-free interest rate	3.83%	2.04%	0.32%
Dividend yield assumption	1.36%	1.33%	1.02%