Investments in Partnerships - Mortgage Loans of Unconsolidated Properties (Details)	12 Months Ended
	Dec. 31, 2021 Property
Mortgage Loans On Real Estate [Line Items]
Debt Instrument, weighted average interest rate	3.98%
Fixed Interest Rate
Mortgage Loans On Real Estate [Line Items]
Debt Instrument, weighted average interest rate	3.98%
Variable Interest Rate
Mortgage Loans On Real Estate [Line Items]
Debt Instrument, weighted average interest rate	3.72%
Mortgage Loan | Fixed Interest Rate | Minimum
Mortgage Loans On Real Estate [Line Items]
Debt instrument, interest rate during period	3.88%
Mortgage Loan | Fixed Interest Rate | Maximum
Mortgage Loans On Real Estate [Line Items]
Debt instrument, interest rate during period	5.95%
Unconsolidated Properties
Mortgage Loans On Real Estate [Line Items]
Number of properties securing mortgage debt	7
Number of fixed rate mortgage loans payable	5
Number of variable rate mortgage loans payable	2
Unconsolidated Properties | Mortgage Loan
Mortgage Loans On Real Estate [Line Items]
Property under development	1
Mortgage loan due date	2027
Debt Instrument, weighted average interest rate	3.86%
Unconsolidated Properties | Mortgage Loan | Fixed Interest Rate
Mortgage Loans On Real Estate [Line Items]
Debt Instrument, weighted average interest rate	4.13%
Unconsolidated Properties | Mortgage Loan | Fixed Interest Rate | Minimum
Mortgage Loans On Real Estate [Line Items]
Debt instrument, interest rate during period	3.20%
Unconsolidated Properties | Mortgage Loan | Fixed Interest Rate | Maximum
Mortgage Loans On Real Estate [Line Items]
Debt instrument, interest rate during period	5.00%
Unconsolidated Properties | Mortgage Loan | Variable Interest Rate
Mortgage Loans On Real Estate [Line Items]
Debt Instrument, weighted average interest rate	1.89%
Unconsolidated Properties | Mortgage Loan | Variable Interest Rate | Minimum
Mortgage Loans On Real Estate [Line Items]
Debt instrument, interest rate during period	1.60%
Unconsolidated Properties | Mortgage Loan | Variable Interest Rate | Maximum
Mortgage Loans On Real Estate [Line Items]
Debt instrument, interest rate during period	4.00%