Plant and Equipment, Net (Tables)

12 Months Ended

Sep. 30, 2021

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 in years			2021	2020
Land				$312.1	$296.8
Buildings			30	1,083.1	997.8
Production facilities(A)	10	to	20	18,236.9	17,289.7
Distribution and other machinery and equipment(B)	5	to	25	5,111.6	4,807.7
Construction in progress				2,745.1	1,784.2
Plant and equipment, at cost				27,488.8	25,176.2
Less: Accumulated depreciation				14,234.2	13,211.5
Plant and equipment, net				$13,254.6	$11,964.7

(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.