Cover Page - USD ($)	12 Months Ended
Cover Page - USD ($)	Dec. 31, 2020	Feb. 16, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K/A
Entity Registrant Name	RealPage, Inc.
Amendment Flag	true
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-34846
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	75-2788861
Entity Address, Address Line One	2201 Lakeside Blvd
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 Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 5,410,580,269
Entity Central Index Key	0001286225
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Common Stock, Shares Outstanding		102,091,526
Amendment Description	RealPage, Inc. (“RealPage” or the “Company”) is filing this Amendment No. 1 to Form 10-K on Form 10-K/A (this “Amendment”) to amend our Annual Report on Form 10-K for the fiscal year ended December 31, 2020 (the “Original Filing”), filed with the Securities and Exchange Commission (the “SEC”) on March 1, 2021. The purpose of this Amendment is solely to disclose the information required in Part III (Items 10, 11, 12, 13 and 14) of the Original Filing, which information was previously omitted from the Original Filing in reliance on General Instruction G(3) to Form 10-K. In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), Items 10 through 14 of Part III of the Original Filing are hereby amended and restated in their entirety. In addition, pursuant to Rule 12b-15 under the Exchange Act, the Company is including Item 15 of Part IV of this Amendment, solely to file the certifications required under Section 302 of the Sarbanes-Oxley Act of 2002. Except as described above, this Amendment does not amend any other information set forth in the Original Filing, and we have not updated disclosures included therein to reflect any subsequent events. On April 22, 2021, the Company completed the transactions contemplated by the Agreement and Plan of Merger, dated as of December 20, 2020, by and among RealPage Holdings, LLC, a Delaware limited liability company, formerly known as Mirasol Parent, LLC (“Parent”), Mirasol Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Parent (“Merger Sub”), and the Company. At the closing, Merger Sub merged with and into the Company (the “Merger”), with the Company surviving as a wholly owned subsidiary of Parent. Parent is an affiliate of funds advised by Thoma Bravo, L.P. This Amendment does not address events occurring after the Merger and the disclosures contained herein relate to the Company prior to the closing of the Merger. This Amendment should be read in conjunction with the Original Filing and with our filings with the SEC subsequent to the Original Filing.

RealPage, Inc. 10-K/A