Subsequent Events	6 Months Ended
Mar. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTIn April 2022, D.R. Horton and Vidler Water Resources, Inc. (Nasdaq: VWTR) (Vidler) entered into a definitive merger agreement pursuant to which D.R. Horton will acquire Vidler for $15.75 per share in an all-cash transaction. Upon successful completion of the tender offer and following completion of the merger, the common stock of Vidler will no longer be listed for trading on the Nasdaq Stock Market. The total equity value of the transaction is approximately $291 million, and the transaction is expected to close during the second calendar quarter of 2022, subject to customary closing conditions.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

Name:	us-gaap_SubsequentEventsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration