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Investments in Partnerships - FDP Loan Agreement (Details) - FDP Loan Agreement - USD ($) $ in Millions		3 Months Ended	6 Months Ended
	Dec. 10, 2020	Sep. 30, 2019	Jun. 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
Outstanding principal			$ 194.6
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