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Operating Partnerships (Details) - USD ($) $ in Thousands, shares in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Oct. 01, 2020 | Dec. 31, 2019
Unsecured Debt | $ 3,166,625 |  | $ 2,524,099
Negative tax capital held by unitholder of partnership | $ 26,000 |  |
Camden Operating L P [Member] |  |  |
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest | 92.00% |  |
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest | 1.00% |  |
Camden Summit Partnership L P [Member] |  |  |
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest | 95.00% |  |
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest | 1.00% |  |
Camden Operating L P [Member] |  |  |
Percentage Of Real Estate Properties Held With Operating Partnership | 4.00% |  |
Units of Partnership Interest, Amount | 11.9 |  |
Limited Partners' Capital Account, Units Outstanding | 0.8 |  |
Camden Summit Partnership L P [Member] |  |  |
Percentage Of Real Estate Properties Held With Operating Partnership | 31.00% |  |
Units of Partnership Interest, Amount | 22.8 |  |
Limited Partners' Capital Account, Units Outstanding | 0.9 |  |
Commercial Banks [Member] |  |  |
Unsecured Debt | $ 39,700 |  | 143,700
Commercial Banks [Member] | 2.70% Term loan Due 2022 |  |  |
Unsecured Debt |  | $ 40,000 | $ 99,700

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