Non-Recourse Property Debt and Credit Agreement - Summary of Non-Recourse Property Loans Payable Related to Properties (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Non-recourse property debt, net	$ 3,628,236	$ 3,737,805
Non-recourse property debt	3,646,093	3,755,153
Debt issuance costs, net of accumulated amortization	(17,857)	(17,348)
Fixed-rate property debt
Debt Instrument [Line Items]
Non-recourse property debt, net	$ 3,631,588	3,740,648
Weighted-Average Interest Rate	3.55%
Fixed-rate property debt \| Maximum [Member]
Debt Instrument [Line Items]
Latest Maturity Date	Jan. 01, 2055
Interest Rate	6.01%
Fixed-rate property debt \| Minimum [Member]
Debt Instrument [Line Items]
Interest Rate	2.42%
Variable Rate Property Debt
Debt Instrument [Line Items]
Non-recourse property debt, net	$ 14,505	$ 14,505
Weighted-Average Interest Rate	1.12%
Variable Rate Property Debt \| Maximum [Member]
Debt Instrument [Line Items]
Latest Maturity Date	Jul. 13, 2033
Interest Rate	1.15%
Variable Rate Property Debt \| Minimum [Member]
Debt Instrument [Line Items]
Interest Rate	1.09%

Debt issuance cost net of accumulated amortization.

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- Definition

Gross secured debt before debt amortization costs.

+ References

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.22(a)(2))
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-Name Accounting Standards Codification
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- Definition

Weighted average interest rate of debt outstanding.

+ References

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(a)(16))
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