Business Combinations and Divestitures	3 Months Ended
Dec. 31, 2022
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	13. BUSINESS COMBINATIONS AND DIVESTITURES We completed no acquisitions during the three months ended December 31, 2022 or during the year ended September 30, 2022. On October 7, 2022, we sold 100% of the membership interests of STR Mechanical, LLC and its subsidiary Technical Services II, LLC (collectively, “STR”). As a result, we recognized a preliminary pre-tax gain of $12,978, which was included in “Gain on sale of assets” within our Condensed Consolidated Statements of Comprehensive Income for the three months ended December 31, 2022. The final purchase price for STR is subject to customary working capital true-up adjustments, expected to be finalized in the second fiscal quarter of 2023 and which may result in an adjustment to the preliminary gain on sale. The disposition of STR, which had operated as part of our Commercial & Industrial segment, will not have a material impact on our ongoing results of operations or financial position.

Business Combinations and Divestitures

3 Months Ended

Dec. 31, 2022

Business Combination Disclosure [Text Block]

13. BUSINESS COMBINATIONS AND DIVESTITURES

We completed no acquisitions during the three months ended December 31, 2022 or during the year ended September 30, 2022.

On October 7, 2022, we sold 100% of the membership interests of STR Mechanical, LLC and its subsidiary Technical Services II, LLC (collectively, “STR”). As a result, we recognized a preliminary pre-tax gain of $12,978, which was included in “Gain on sale of assets” within our Condensed Consolidated Statements of Comprehensive Income for the three months ended December 31, 2022. The final purchase price for STR is subject to customary working capital true-up adjustments, expected to be finalized in the second fiscal

quarter of 2023 and which may result in an adjustment to the preliminary gain on sale. The disposition of STR, which had operated as part of our Commercial & Industrial segment, will not have a material impact on our ongoing results of operations or financial position.