Goodwill and Intangible Assets

6 Months Ended

Mar. 31, 2025

6. Goodwill and Intangible Assets

Goodwill and acquired intangible assets consisted of the following:


(in thousands)	March 31, 2025						September 30, 2024
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Goodwill					$	3,444,104					$	3,461,891
Intangible assets with finite lives:
Purchased software	$	631,889	$	451,196	$	180,693	$	634,439	$	436,471	$	197,968
Capitalized software		22,877		22,877		—		22,877		22,877		—
Customer lists and relationships		1,135,655		475,455		660,200		1,141,086		457,718		683,368
Trademarks and trade names		37,780		22,879		14,901		37,961		21,821		16,140
Other		3,900		3,900		—		3,941		3,941		—
Total intangible assets with finite lives	$	1,832,101	$	976,307	$	855,794	$	1,840,304	$	942,828	$	897,476
Total goodwill and acquired intangible assets					$	4,299,898					$	4,359,367

Changes in Goodwill were as follows:


(in thousands)
Balance, October 1, 2024	$	3,461,891
Foreign currency translation adjustment		(17,787	)
Balance, March 31, 2025	$	3,444,104

The aggregate amortization expense for intangible assets with finite lives is classified in our Consolidated Statements of Operations as follows:


(in thousands)	Three months ended				Six months ended
	March 31, 2025		March 31, 2024		March 31, 2025		March 31, 2024
Amortization of acquired intangible assets	$	11,380	$	10,424	$	22,820	$	20,787
Cost of revenue		8,131		9,584		16,431		19,150
Total amortization expense	$	19,511	$	20,008	$	39,251	$	39,937