| Cover Page - shares | 6 Months Ended | |
| Jun. 30, 2019 | Jul. 24, 2019 | |
| Cover page. | ||
| Document Type | 10-Q/A | |
| Document Quarterly Report | true | |
| Document Period End Date | Jun. 30, 2019 | |
| Document Transition Report | false | |
| Entity File Number | 001-34846 | |
| Entity Registrant Name | RealPage, Inc | |
| Entity Incorporation, State or Country Code | DE | |
| Entity Tax Identification Number | 75-2788861 | |
| Entity Address, Address Line One | 2201 Lakeside Boulevard | |
| Entity Address, City or Town | Richardson | |
| Entity Address, State or Province | TX | |
| Entity Address, Postal Zip Code | 75082-4305 | |
| City Area Code | 972 | |
| Local Phone Number | 820-3000 | |
| Title of 12(b) Security | Common Stock, $0.001 par value | |
| Trading Symbol | RP | |
| Security Exchange Name | NASDAQ | |
| Entity Current Reporting Status | Yes | |
| Entity Interactive Data Current | Yes | |
| Entity Filer Category | Large Accelerated Filer | |
| Entity Small Business | false | |
| Entity Emerging Growth Company | false | |
| Entity Shell Company | false | |
| Entity Common Stock, Shares Outstanding | 94,759,239 | |
| Amendment Flag | true | |
| Document Fiscal Year Focus | 2019 | |
| Document Fiscal Period Focus | Q2 | |
| Entity Central Index Key | 0001286225 | |
| Current Fiscal Year End Date | --12-31 | |
| Amendment Description | This Amendment No. 1 is filed solely to amend and restate the Controls and Procedures disclosure included in Item 4 of the original Form 10-Q filed August 9, 2019 to reflect a material weakness in internal controls over financial reporting. |
