Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Parenthetical) (Details)	3 Months Ended	9 Months Ended
Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Pre-tax non-cash impairment	$ 26,000,000.0	$ 26,000,000.0
Mineral rights	0	$ 0
Mineral Rights [Member]
Property, Plant and Equipment [Line Items]
Pre-tax non-cash impairment	$ 26,000,000.0

The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760

Name:	us-gaap_TangibleAssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration