| Document and Entity Information | Aug. 09, 2022 |
| Cover [Abstract] | |
| Entity Address, Address Line Two | Suite T-200 |
| Amendment Flag | true |
| Entity Central Index Key | 0001283630 |
| Document Type | 8-K/A |
| Document Period End Date | Aug. 09, 2022 |
| Entity Registrant Name | American Campus Communities, Inc. |
| Entity Incorporation State Country Code | MD |
| Entity File Number | 001-32265 |
| Entity Tax Identification Number | 76-0753089 |
| Entity Address, Address Line One | 12700 Hill Country Blvd. |
| Entity Address, City or Town | Austin |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 78738 |
| City Area Code | (512) |
| Local Phone Number | 732-1000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, par value $0.01 per share |
| Trading Symbol | ACC |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Description | On August 9, 2022, the Registrant filed with the Securities and Exchange Commission a Current Report on Form 8-K dated August 9, 2022 (the “Form 8-K”) to report, among other things, the completion of the transactions contemplated by the Merger Agreement (as defined below). |
