Intangible Assets, Goodwill, Acquisitions and Divestitures

9 Months Ended

Jun. 30, 2026

Intangible Asset, Goodwill and Other [Abstract]

Intangible Assets, Goodwill, Acquisitions, and Divestitures

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 $5.1 and $7.1 for the three months ended June 30, 2026 and 2025, respectively. Amortization expense related to intangible assets was $16.7 and $22.3 for the nine months ended June 30, 2026 and 2025, 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 and nine months ended June 30, 2026 and 2025, respectively.

Intangible assets, net, as of June 30, 2026 and September 30, 2025 consisted of the following:

		June 30, 2026					September 30, 2025
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Customer relationships	6-21 yrs.	$	689.3	$	(639.5	)	$	715.9	$	(649.4	)
Total intangible assets		$	689.3	$	(639.5	)	$	715.9	$	(649.4	)

Goodwill

As of September 30, 2024, September 30, 2025, and June 30, 2026, 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.