Goodwill and Intangible Assets (Tables)

9 Months Ended

Jun. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Acquired Intangible Assets

Goodwill and acquired intangible assets consisted of the following:

(in thousands)	June 30, 2024						September 30, 2023
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Goodwill (not amortized)					$	3,442,245					$	3,358,511
Intangible assets with finite lives (amortized):
Purchased software	$	627,099	$	424,643	$	202,456	$	615,915	$	395,109	$	220,806
Capitalized software		22,877		22,877		—		22,877		22,877		—
Customer lists and relationships		1,135,067		443,644		691,423		1,116,117		413,125		702,992
Trademarks and trade names		37,727		21,101		16,626		36,851		19,400		17,451
Other		3,886		3,886		—		3,867		3,867		—
Total intangible assets with finite lives	$	1,826,656	$	916,151	$	910,505	$	1,795,627	$	854,378	$	941,249
Total goodwill and acquired intangible assets					$	4,352,750					$	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		6,616
Balance, June 30, 2024	$	3,442,245

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				Nine months ended
	June 30, 2024		June 30, 2023		June 30, 2024		June 30, 2023
Amortization of acquired intangible assets	$	10,672	$	10,670	$	31,459	$	29,352
Cost of revenue		9,685		9,841		28,835		25,817
Total amortization expense	$	20,357	$	20,511	$	60,294	$	55,169