Revenue and Accounts Receivable - Schedule of Rollforward of Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 45,259	$ 37,056
Current period provisions	7,424	8,623
Write-offs charged against allowance	(8,591)	(7,447)
Recoveries of amounts previously written off	1,008	934
Ending balance	$ 45,100	$ 39,166