Plant and Equipment, Net (Tables)

12 Months Ended

Sep. 30, 2024

Property, Plant and Equipment [Abstract]

Schedule of Major Classes of Plant and Equipment

The major classes of plant and equipment are as follows:

30 September	Useful life	2024	2023
Land		$312.1	$320.8
Buildings	30 years	1,730.7	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 progress		11,190.2	6,159.1
Plant and equipment, at cost		$39,950.9	$32,746.3
Less: Accumulated depreciation		16,580.0	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.