Goodwill and Intangible Assets - Summary of Changes to Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Goodwill [Roll Forward]
Beginning Balance	$ 788,185	$ 812,364
Foreign currency translation adjustment	(27,118)	1,417
Goodwill, Written off Related to Sale of Business Unit		(25,596)
Ending Balance	761,067	788,185
Software
Goodwill [Roll Forward]
Beginning Balance	641,537	665,716
Foreign currency translation adjustment	(27,118)	1,417
Goodwill, Written off Related to Sale of Business Unit		(25,596)
Ending Balance	614,419	641,537
Scores
Goodwill [Roll Forward]
Beginning Balance	146,648	146,648
Foreign currency translation adjustment	0	0
Goodwill, Written off Related to Sale of Business Unit		0
Ending Balance	$ 146,648	$ 146,648

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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