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Investments in Partnerships - FDP Loan Agreement (Details) - FDP Loan Agreement - USD ($) $ in Millions		1 Months Ended	3 Months Ended	9 Months Ended
	Dec. 10, 2020	Aug. 31, 2022	Sep. 30, 2019	Sep. 30, 2022	Jul. 31, 2019	Jan. 31, 2018
Schedule Of Equity Method Investments [Line Items]
Long-term debt					$ 350.0	$ 250.0
Proceeds from (Repayments of) Long-term debt and capital securities			$ 51.0
Distribution of financing proceeds from equity method investee			$ 25.0
Principal payment		$ 83.1		$ 83.1
Outstanding principal				$ 111.5
Debt instrument, maturity date				Jan. 22, 2023
Debt instrument extension term				1 year
Debt, variable interest rate				2.50%
Percentage of full recourse guarantee				50.00%
Full recourse guarantee amount				$ 50.0
Federal Funds Rate
Schedule Of Equity Method Investments [Line Items]
Debt, variable interest rate				0.50%
LIBOR Market Index Rate
Schedule Of Equity Method Investments [Line Items]
Debt, variable interest rate				1.00%
LIBOR
Schedule Of Equity Method Investments [Line Items]
Debt, variable interest rate				3.50%
Partnership Loan
Schedule Of Equity Method Investments [Line Items]
Principal payment	$ 100.0
Outstanding principal	$ 301.0			$ 201.0
Accrued interest percentage				15.00%
Cash distributions description				50/50 cash distributions to the Company and its joint venture partner