Accelerated Share Repurchase (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 17, 2021	Aug. 31, 2021	Jun. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021
Equity, Class of Treasury Stock [Line Items]
Payments for Repurchase of Common Stock				$ 1,104,180	$ 874,179	$ 235,223
Accelerated Share Repurchase Agreement Percentage	80.00%
Accelerated Share Repurchases Agreement Amount	$ 200,000
June17 2021 Accelerated share repurchase agreement
Equity, Class of Treasury Stock [Line Items]
Payments for Repurchase of Common Stock	$ 200,000
Stock Repurchased and Retired During Period, Shares		70,127	319,400		389,527
Stock Repurchase Program, Remaining Authorized Repurchase Amount							$ 40,000