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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment Depreciation is calculated by the straight-line method over the estimated useful lives of depreciable assets which are as follows:
Buildings and improvements
10 to 40 years
Machinery and equipment
2 to 7 years
Software and computer equipment
3 to 5 years
Furniture, fixtures and other equipment
4 to 10 years
Property, plant and equipment consist of the following:
December 31,
20232022
(In thousands)
Land$212,722 $214,763 
Buildings and improvements2,080,589 1,817,135 
Machinery and equipment7,022,614 6,757,652 
Finance lease assets209,506 165,122 
Furniture, fixtures and other equipment22,655 23,240 
Software and computer equipment200,362 240,610 
Construction in progress223,332 152,809 
Total property, plant and equipment9,971,780 9,371,331 
Accumulated depreciation and amortization(6,672,335)(6,235,717)
Total property, plant and equipment, net$3,299,445 $3,135,614 

The following table summarizes our depreciation expense:
For the Year Ended December 31,
 202320222021
 (In thousands)
Depreciation expense$630,941 $612,105 $562,962