XML 39 R21.htm IDEA: XBRL DOCUMENT v3.24.3
Plant and Equipment, Net
 12 Months Ended
Sep. 30, 2024
Property, Plant and Equipment [Abstract]  
Plant and Equipment, Net PLANT AND EQUIPMENT, NET
The major classes of plant and equipment are as follows:
30 SeptemberUseful life20242023
Land$312.1 $320.8 
Buildings30 years1,730.7 1,543.7 
Production facilities(A)
10-20 years
21,245.2 19,593.1 
Distribution and other machinery and equipment(B)
5-25 years
5,472.7 5,129.6 
Construction in progress11,190.2 6,159.1 
Plant and equipment, at cost$39,950.9 $32,746.3 
Less: Accumulated depreciation16,580.0 15,274.2 
Plant and equipment, net$23,370.9 $17,472.1 
(A)Depreciable lives of production facilities related to long-term customer supply contracts are generally matched to the contract lives.
(B)The depreciable lives for various types of distribution equipment are: 10 to 25 years for cylinders, depending on the nature and properties of the product; 20 years for tanks; generally 7.5 years for customer stations; and 5 to 15 years for tractors and trailers.
Depreciation expense was $1,419.6, $1,325.8, and $1,302.7 in fiscal years 2024, 2023, and 2022, respectively.