Plant and Equipment, Net (Tables)

12 Months Ended

Sep. 30, 2023

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	2023	2022
Land		$320.8	$266.7
Buildings	30 years	1,543.7	1,431.3
Production facilities(A)	10-20 years	19,593.1	18,000.5
Distribution and other machinery and equipment(B)	5-25 years	5,129.6	4,784.9
Construction in progress		6,159.1	3,676.7
Plant and equipment, at cost		$32,746.3	$28,160.1
Less: Accumulated depreciation		15,274.2	13,999.6
Plant and equipment, net		$17,472.1	$14,160.5

(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.