Subsequent Events	12 Months Ended
Sep. 30, 2025
Subsequent Events [Abstract]
Subsequent Events	21. SUBSEQUENT EVENTS On November 7, 2025, we entered into a definitive agreement with Gulf Island Fabrication, Inc. (“Gulf Island”) (NASDAQ: GIFI) providing for our acquisition of Gulf Island, a steel fabricator and service provider to the industrial, energy and government sectors. Under the terms of the agreement, we will pay $12.00 in cash per Gulf Island share, or an aggregate equity value of approximately $192 million.

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
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/855/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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