Goodwill and Intangible Assets (Tables)

3 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Acquired Intangible Assets

Goodwill and acquired intangible assets consisted of the following:

(in thousands)	December 31, 2023						September 30, 2023
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Goodwill (not amortized)					$	3,458,463					$	3,358,511
Intangible assets with finite lives (amortized):
Purchased software	$	629,554	$	406,952	$	222,602	$	615,915	$	395,109	$	220,806
Capitalized software		22,877		22,877		—		22,877		22,877		—
Customer lists and relationships		1,140,213		427,224		712,989		1,116,117		413,125		702,992
Trademarks and trade names		37,892		20,113		17,779		36,851		19,400		17,451
Other		3,928		3,928		—		3,867		3,867		—
Total intangible assets with finite lives	$	1,834,464	$	881,094	$	953,370	$	1,795,627	$	854,378	$	941,249
Total goodwill and acquired intangible assets					$	4,411,833					$	4,299,760

Schedule of Changes in Goodwill by Reportable Segments

Changes in Goodwill were as follows:

(in thousands)
Balance, October 1, 2023	$	3,358,511
Acquisitions		77,118
Foreign currency translation adjustment		22,834
Balance, December 31, 2023	$	3,458,463

Schedule of Aggregate Amortization Expense for Intangible Assets with Finite Lives

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
	December 31, 2023		December 31, 2022
Amortization of acquired intangible assets	$	10,363	$	8,026
Cost of revenue		9,566		6,142
Total amortization expense	$	19,929	$	14,168