Fair Value Measurements - Carrying Value and Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Level 2 \| Carrying Value \| Senior Unsecured Notes, net
Liabilities:
Debt instrument, fair value	$ 5,493,556	$ 5,146,192
Level 2 \| Fair Value \| Senior Unsecured Notes, net
Liabilities:
Debt instrument, fair value	5,851,678	5,639,586
Level 3 \| Carrying Value \| Non-recourse mortgage, net
Liabilities:
Debt instrument, fair value	724,778	1,145,554
Level 3 \| Fair Value \| Non-recourse mortgage, net
Liabilities:
Debt instrument, fair value	$ 725,318	$ 1,148,551

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69C
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
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-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1D
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant