Leases - Narrative (Details) - USD ($)	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term	5 years	5 years 8 months 12 days
Weighted average discount rate	5.65%	5.68%
Cash paid for operating liabilities	$ 14,000,000	$ 12,700,000
Right of use asset in exchange for new lease liability	$ 0	$ 0
Buildings and Property | Minimum
Lessee, Lease, Description [Line Items]
Non-cancelable lease term	1 month
Operating lease renewal term	1 year
Buildings and Property | Maximum
Lessee, Lease, Description [Line Items]
Non-cancelable lease term	14 years
Operating lease renewal term	16 years
Drilling Rigs | Maximum
Lessee, Lease, Description [Line Items]
Non-cancelable lease term	1 year
Compressor Equipment | Minimum
Lessee, Lease, Description [Line Items]
Non-cancelable lease term	3 months
Compressor Equipment | Maximum
Lessee, Lease, Description [Line Items]
Non-cancelable lease term	5 years