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SEGMENT INFORMATION - Schedule of Reportable Segments (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) segment | Jun. 30, 2023 USD ($)
Segment Reporting [Abstract] |  |  |  |
Number of reportable segments | segment |  |  | 3 |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | $ 910,063 | $ 895,906 | $ 1,825,511 | $ 1,755,973
Acquisition-related costs | (140) | 0 | (140) | (255)
Restructuring Initiatives | (2,315) | (1,943) | (5,795) | (13,467)
Net unrealized investment (loss) gain | (140) | 2,891 | 452 | 3,079
Depreciation and amortization | (64,968) | (62,267) | (129,317) | (121,526)
Interest Expense | (10,061) | (9,688) | (20,236) | (19,916)
Interest Income | 3,102 | 648 | 6,000 | 1,320
Income before Income Taxes | 118,246 | 110,878 | 222,564 | 184,147
Optimization initiative |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Restructuring Initiatives | (2,315) | (1,943) | (5,812) | (13,483)
Prior year initiatives |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Restructuring Initiatives | 0 | 0 | 17 | 16
Aptar Pharma |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 414,533 | 390,700 | 821,826 | 746,746
Aptar Beauty |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 321,487 | 329,587 | 648,807 | 655,976
Aptar Closures |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 174,043 | 175,619 | 354,878 | 353,251
Operating segment |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 920,464 | 906,885 | 1,845,531 | 1,776,773
Operating segment | Aptar Pharma |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 414,783 | 391,010 | 822,273 | 747,121
Adjusted EBITDA | 141,488 | 125,866 | 273,666 | 235,164
Restructuring Initiatives | (65) | (434) | (89) | (1,565)
Operating segment | Aptar Beauty |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 328,700 | 338,404 | 663,580 | 671,742
Adjusted EBITDA | 44,638 | 43,100 | 85,772 | 80,305
Restructuring Initiatives | (1,199) | (479) | (3,909) | (9,770)
Operating segment | Aptar Closures |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 176,981 | 177,471 | 359,678 | 357,910
Adjusted EBITDA | 27,118 | 27,772 | 54,279 | 53,780
Restructuring Initiatives | (893) | (440) | (1,653) | (962)
Intersegment |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 10,401 | 10,979 | 20,020 | 20,800
Intersegment | Aptar Pharma |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 250 | 310 | 447 | 375
Intersegment | Aptar Beauty |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 7,213 | 8,817 | 14,773 | 15,766
Intersegment | Aptar Closures |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Net Sales | 2,938 | 1,852 | 4,800 | 4,659
Corporate & Other, unallocated |  |  |  |
Financial information regarding the Company's reportable segments |  |  |  |
Adjusted EBITDA | (20,476) | (15,501) | (42,117) | (34,337)
Restructuring Initiatives | $ (158) | $ (590) | $ (144) | $ (1,170)

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