Debt - Narrative (Details) $ in Millions	6 Months Ended
	Mar. 31, 2025 USD ($)
Lease Guarantee
Debt Instrument [Line Items]
Maximum potential future payments under guarantees	$ 67.8
Lease Guarantee | Minimum
Debt Instrument [Line Items]
Guarantor obligation term	9 months
Lease Guarantee | Maximum
Debt Instrument [Line Items]
Guarantor obligation term	15 years
Debt Guarantee
Debt Instrument [Line Items]
Maximum potential future payments under guarantees	$ 12.4
Debt Guarantee | Minimum
Debt Instrument [Line Items]
Guarantor obligation term	2 years
Debt Guarantee | Maximum
Debt Instrument [Line Items]
Guarantor obligation term	5 years