Intangible Assets, Goodwill, Acquisitions and Divestitures

3 Months Ended

Dec. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets, Goodwill and Acquisitions

6. Intangible Assets, Goodwill, Acquisitions, and Divestitures

Intangible Assets, net

Identifiable intangible assets consist of acquired customer contracts and relationships. Amortization expense related to intangible assets was $6.2 and $8.1 for the three months ended December 31, 2025 and 2024, respectively. These assets are amortized over their estimated useful lives of which the reasonableness is continually evaluated by the Company. There were no intangible assets acquired during the three months ended December 31, 2025 and 2024, respectively.

Intangible assets, net, as of December 31, 2025 and September 30, 2025 consisted of the following:

		December 31, 2025					September 30, 2025
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Customer relationships	6-21 yrs.	$	689.3	$	(629.0	)	$	715.9	$	(649.4	)
Total intangible assets		$	689.3	$	(629.0	)	$	715.9	$	(649.4	)

Goodwill

As of September 30, 2024, September 30, 2025, and December 31, 2025, the Company had goodwill of $2,015.7. As of each of these dates, $1,797.7 of the Company's goodwill was attributable to the Maintenance Services segment, and $218.0 million of the Company's goodwill was attributable to the Development Services segment.