Leases (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Leases [Abstract]
Operating lease, right-of-use asset	$ 184,166	$ 155,662
Operating lease, liability	$ 224,776	$ 188,141
Weighted-average remaining lease term	7 years 4 months 24 days	6 years 10 months 24 days
Weighted-average discount rate	5.53%	4.55%