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Acquisitions and Dispositions (Narrative) (Details) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |
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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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Gain resulting from the re-measurement of previously held equity interest to fair value upon asset acquisition. + References No definition available. + Details
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- Definition Number of operating properties acquired which are now fully consolidated during the period. + References No definition available. + Details
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- Definition Total net real estate assets, including investments in joint ventures. + References No definition available. + Details
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- Definition Amount after amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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- Definition This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired. + References No definition available. + Details
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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2443-110228 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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- Definition The fair value of liabilities assumed in noncash investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4313-108586 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + 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 The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
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