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Debt Debt - Encumbered Properties (Details) $ in Thousands	Dec. 31, 2020 USD ($) property	Dec. 31, 2019 USD ($) property
Debt Instrument [Line Items]
Net Book Value	$ 8,245,388	$ 7,986,276
Encumbered Properties
Debt Instrument [Line Items]
Number of Properties | property	17,985	18,001
Net Book Value	$ 2,401,181	$ 2,468,887
Encumbered Properties | AH4R 2014-SFR2 securitization
Debt Instrument [Line Items]
Number of Properties | property	4,537	4,543
Net Book Value	$ 575,634	$ 592,203
Encumbered Properties | AH4R 2014-SFR3 securitization
Debt Instrument [Line Items]
Number of Properties | property	4,581	4,587
Net Book Value	$ 624,279	$ 642,189
Encumbered Properties | AH4R 2015-SFR1 securitization
Debt Instrument [Line Items]
Number of Properties | property	4,695	4,696
Net Book Value	$ 624,269	$ 641,595
Encumbered Properties | AH4R 2015-SFR2 securitization
Debt Instrument [Line Items]
Number of Properties | property	4,172	4,175
Net Book Value	$ 576,999	$ 592,900

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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.

+ References

No definition available.

+ Details

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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