Variable Interest Entities - World Energy (Details) $ in Millions	1 Months Ended
	Nov. 30, 2023 renewal	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)
Variable Interest Entity [Line Items]
Financing receivables		$ 1,245.4	$ 1,220.2
World Energy | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Financing receivables		300.0
Term of project agreement (in years)	15 years
Number of renewal terms of project agreement | renewal	2
Project agreement, renewal term (in years)	5 years
Maximum loss exposure, amount		2,100.0
World Energy | Variable Interest Entity, Not Primary Beneficiary | Sustainable Aviation Fuel Facility Expansion Project
Variable Interest Entity [Line Items]
Maximum loss exposure, amount		1,500.0
World Energy | Variable Interest Entity, Not Primary Beneficiary | Purchase Commitment | Sustainable Aviation Fuel Facility Expansion Project
Variable Interest Entity [Line Items]
Maximum loss exposure, amount		215.0
World Energy | Variable Interest Entity, Not Primary Beneficiary | Property, Plant and Equipment | Sustainable Aviation Fuel Facility Expansion Project
Variable Interest Entity [Line Items]
Maximum loss exposure, amount		1,200.0
World Energy | Variable Interest Entity, Not Primary Beneficiary | Other Noncurrent Assets | Sustainable Aviation Fuel Facility Expansion Project
Variable Interest Entity [Line Items]
Maximum loss exposure, amount		$ 336.0