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Plant Closures (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Property, Plant and Equipment [Abstract]
Accelerated depreciation	$ 387	$ 566
Completed Plant
Accelerated depreciation	$ 387	$ 566
Property, Plant and Equipment [Member]
Completed Plant
Property, Plant and Equipment, Dispositions	11 million	151 million
Property, Plant and Equipment, Disposals	$ 2	$ 19

X

- Definition

Accelerated depreciation

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

Amount of divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

Describes an entity's accounting treatment for disposals of property, plant and equipment, including gains and losses related thereto.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=27011434&loc=d3e125663-122742

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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