Acquisitions and Dispositions (Narrative) (Details)																			12 Months Ended
	Jun. 08, 2022 USD ($) a	Apr. 07, 2022 USD ($) a	Apr. 01, 2022 USD ($)	Mar. 24, 2022 USD ($)	Mar. 08, 2022 USD ($) a	Dec. 09, 2021 USD ($) a	Dec. 02, 2021 USD ($)	Nov. 09, 2021 USD ($)	Oct. 25, 2021 USD ($) a	Oct. 14, 2021 USD ($)	Aug. 24, 2021 USD ($)	Jun. 29, 2021 USD ($) a	Jun. 22, 2021 USD ($)	Jun. 02, 2021 USD ($)	Jun. 01, 2021 USD ($) a	Nov. 24, 2020 USD ($) a	Mar. 03, 2020 USD ($) a	Jan. 13, 2020 USD ($) a	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property																			$ 36,372,000	$ 174,384,000	$ 382,000
Payments to Acquire Real Estate																			1,066,051,000	629,959,000	0
Secured Debt																			514,989,000	0
Gain on acquisition of unconsolidated joint venture interests																			474,146,000	0	0
Real Estate Assets Total																			9,067,762,000	7,104,770,000
Other Assets																			229,371,000	234,370,000
Other liabilities																			39,168,000	$ 0	$ 0
Unsecured Credit Facility [Member]
Property, Plant and Equipment [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity																			1,200,000,000
March 2019 Credit Agreement | Unsecured Credit Facility [Member]
Property, Plant and Equipment [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity																						$ 900,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Area of Land | a																	4.7
Proceeds from Sale of Land Held-for-investment																	$ 800,000
Cameron Village [Member]
Property, Plant and Equipment [Line Items]
Area of Land | a																		4.9
Purchase price of land acquired																		$ 18,200,000
Camden Durham
Property, Plant and Equipment [Line Items]
Area of Land | a																4.1
Purchase price of land acquired																$ 27,600,000
Camden Greenville
Property, Plant and Equipment [Line Items]
Number of Operating properties Acquired										1
Number of Units in Real Estate Property										558
Payments to Acquire Real Estate										$ 165,500,000
Camden Central
Property, Plant and Equipment [Line Items]
Number of Operating properties Acquired											1
Number of Units in Real Estate Property											368
Payments to Acquire Real Estate											$ 176,300,000
Camden Franklin park
Property, Plant and Equipment [Line Items]
Number of Operating properties Acquired														1
Number of Units in Real Estate Property														328
Payments to Acquire Real Estate														$ 105,300,000
Camden Music Row
Property, Plant and Equipment [Line Items]
Number of Operating properties Acquired													1
Number of Units in Real Estate Property													430
Payments to Acquire Real Estate													$ 186,300,000
Camden Gulch
Property, Plant and Equipment [Line Items]
Area of Land | a						2.0
Purchase price of land acquired						$ 36,600,000
Camden Baker
Property, Plant and Equipment [Line Items]
Area of Land | a									5.2
Purchase price of land acquired									$ 24,000,000
Camden Woodmill Creek
Property, Plant and Equipment [Line Items]
Area of Land | a															14.6
Purchase price of land acquired															$ 9,300,000
Camden Pier District II
Property, Plant and Equipment [Line Items]
Area of Land | a												0.2
Purchase price of land acquired												$ 2,100,000
Camden Oak Crest Park [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property																			81,100,000
Number of Real Estate Properties								2
Number of Units in Real Estate Property								652
Proceeds from Sale of Property, Plant, and Equipment								$ 115,000,000
Camden Russett [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property																			93,300,000
Number of Real Estate Properties							1
Number of Units in Real Estate Property							426
Proceeds from Sale of Property, Plant, and Equipment							$ 145,000,000
The Funds
Property, Plant and Equipment [Line Items]
Number of Real Estate Properties			22
Number of Units in Real Estate Property			7,247
Payments to Acquire Real Estate			$ 1,100,000,000
Secured Debt			514,600,000
Gain on acquisition of unconsolidated joint venture interests																			474,100,000
Real Estate Assets Total			2,100,000,000
Other Assets			24,700,000
Below Market Lease, Net			7,600,000
Other liabilities			39,200,000
Finite-Lived Intangible Asset, Acquired-in-Place Leases			$ 44,000,000
The Funds | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Property, Plant and Equipment [Line Items]
equity method investment non-ownership percentage			68.70%
Ballyntine
Property, Plant and Equipment [Line Items]
Area of Land | a		42.6
Purchase price of land acquired		$ 32,700,000
Nations
Property, Plant and Equipment [Line Items]
Area of Land | a	3.8
Purchase price of land acquired	$ 30,500,000
Camden Long Meadow Farms
Property, Plant and Equipment [Line Items]
Area of Land | a					15.9
Purchase price of land acquired					$ 7,800,000
Camden Largo Town Center [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property																			$ 36,400,000
Number of Real Estate Properties				1
Number of Units in Real Estate Property				245
Proceeds from Sale of Property, Plant, and Equipment				$ 71,900,000