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Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2025

Goodwill and Other Intangible Assets

Schedule of intangible assets gross carrying amounts and accumulated amortization from continuing operations

​

​	​	​	​	​	​
(Dollars in thousands)		2025			2024
Goodwill	​	$	761,931	​	529,935
​	​		​	​	​
Intangible assets with determinable lives:	​		​	​	​
Patents	​		​	​	​
Gross carrying amount	​	$	7,607	​	2,638
Less: accumulated amortization	​		1,775	​	1,415
Net	​	$	5,832	​	1,223
​	​		​	​	​
Capitalized software	​		​	​	​
Gross carrying amount	​	$	138,144	​	126,721
Less: accumulated amortization	​		100,818	​	89,558
Net	​	$	37,326	​	37,163
​	​		​	​	​
Customer Relationships	​		​	​	​
Gross carrying amount	​	$	625,535	​	330,328
Less: accumulated amortization	​		159,543	​	132,135
Net	​	$	465,992	​	198,193
​	​		​	​	​
Other	​		​	​	​
Gross carrying amount	​	$	76,991	​	15,182
Less: accumulated amortization	​		24,829	​	11,173
Net	​	$	52,162	​	4,009
Intangible assets with indefinite lives:	​		​	​	​
Trade names	​	$	162,661	​	162,936

Schedule of carrying amount of goodwill attributable to each business segment from continuing operations

​

​	​	​	​	​	​	​	​	​	​	​
(Dollars in millions)		A&D			Test			USG		Total
Balance as of September 30, 2023	​	$	105.6	​	​	34.0	​	353.6	​	493.2
Acquisition activity	​	​	—	​	​	30.9	​	—	​	30.9
Foreign currency translation and other	​	​	—	​	​	2.5	​	3.3	​	5.8
Balance as of September 30, 2024	​	$	105.6	​	​	67.4	​	356.9	​	529.9
Acquisition activity	​	​	226.5	​	​	—	​	—	​	226.5
Foreign currency translation and other	​	​	1.9	​	​	0.4	​	3.2	​	5.5
Balance as of September 30, 2025	​	$	334.0	​	​	67.8	​	360.1	​	761.9

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Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

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Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class.

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