| Document and Entity Information Document and Entity Information | Mar. 04, 2021 |
| Document And Entity Information [Abstract] | |
| Title of 12(b) Security | Common Shares of Beneficial Interest, $.01 par value |
| Entity Incorporation, State or Country Code | TX |
| Entity Central Index Key | 0000906345 |
| Entity Emerging Growth Company | false |
| Document Type | 8-K |
| Document Period End Date | Feb. 4, 2021 |
| Entity Registrant Name | CAMDEN PROPERTY TRUST |
| Entity Address, Address Line One | 11 Greenway Plaza, Suite 2400 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77046 |
| City Area Code | 713 |
| Local Phone Number | 354-2500 |
| Entity File Number | 1-12110 |
| Entity Tax Identification Number | 76-6088377 |
| Trading Symbol | CPT |
| Security Exchange Name | NYSE |
| Amendment Flag | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Soliciting Material | false |
| Written Communications | false |
