Real Estate Acquisitions and Dispositions - Schedule of Real Estate Asset Acquisitions and Dispositions (Details)	6 Months Ended
	Jun. 30, 2021 a ApartmentUnit
Jackson, MS [Member] | Multifamily [Member] | Crosswinds [Member]
Acquisitionsand Disposals [Line Items]
Number of Units in Real Estate Property	360
Disposal Date	2021-06
Jackson, MS [Member] | Multifamily [Member] | Pear Orchard [Member]
Acquisitionsand Disposals [Line Items]
Number of Units in Real Estate Property	389
Disposal Date	2021-06
Jackson, MS [Member] | Multifamily [Member] | Reflection Pointe [Member]
Acquisitionsand Disposals [Line Items]
Number of Units in Real Estate Property	296
Disposal Date	2021-06
Jackson, MS [Member] | Multifamily [Member] | Lakeshore Landing [Member]
Acquisitionsand Disposals [Line Items]
Number of Units in Real Estate Property	196
Disposal Date	2021-06
Novel Daybreak [Member] | Salt Lake City, UT [Member] | Multifamily [Member]
Acquisitionsand Disposals [Line Items]
Number of Units in Real Estate Property	400	[1],[2]
Acquisition Date	2021-04	[1]
Novel West Midtown [Member] | Atlanta, GA [Member] | Multifamily [Member]
Acquisitionsand Disposals [Line Items]
Number of Units in Real Estate Property	340	[1],[2]
Acquisition Date	2021-04	[1]
M A A Westshore | Tampa F L | Land
Acquisitionsand Disposals [Line Items]
Acquisition Date	2021-06
Area of Land | a	19

[1] These pre-purchase multifamily community developments are being developed through joint ventures with a local developer. The Company owns 80% of each joint venture that owns these properties.

[2] Represents number of units upon completion of the development