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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment at December 31, 2024 and 2023 consists of the following:
(In thousands)20242023Estimated
useful lives in
years
Land$47,192 $44,177 
Buildings and improvements849,835 779,589 
5-35
Manufacturing equipment799,611 685,504 
5-10
Canisters and cylinders203,962 186,231 
3-12
Molds85,403 83,745 
3-5
Office furniture and lab equipment338,208 299,438 
3-8
Construction in progress356,087 297,448 
Total property, plant and equipment2,680,298 2,376,132 
Less accumulated depreciation1,057,372 908,089 
Property, plant and equipment, net$1,622,926 $1,468,043 
Depreciation Expense
The table below sets forth the depreciation expense for the years ended December 31, 2024, 2023 and 2022:

(In thousands)202420232022
Depreciation expense$188,120 $172,683 $135,371