Plant and Equipment, Net (Tables)

12 Months Ended

Sep. 30, 2020

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			2020	2019
Land				$296.8	$281.5
Buildings			30	997.8	946.8
Production facilities(A)	10	to	20	17,289.7	15,602.1
Distribution and other machinery and equipment(B)	5	to	25	4,807.7	4,491.9
Construction in progress				1,784.2	1,011.4
Plant and equipment, at cost				25,176.2	22,333.7
Less: Accumulated depreciation				13,211.5	11,996.1
Plant and equipment, net				$11,964.7	$10,337.6

(A)Depreciable lives of production facilities related to long-term customer supply contracts are 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; 7.5 years for customer stations; and 5 to 15 years for tractors and trailers.