Cover - shares	9 Months Ended
	Sep. 30, 2023	Oct. 30, 2023
Class of Stock [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	001-39228
Entity Registrant Name	MULTIPLAN CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	84-3536151
Entity Address, Address Line One	115 Fifth Avenue
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10003
City Area Code	212
Local Phone Number	780-2000
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		649,486,255
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001793229
Current Fiscal Year End Date	--12-31
Common Class A
Class of Stock [Line Items]
Title of 12(b) Security	Shares of Class A common stock, $0.0001 par value per share
Trading Symbol	MPLN
Security Exchange Name	NYSE
Warrants
Class of Stock [Line Items]
Title of 12(b) Security	Warrants
Trading Symbol	MPLN.WS
Security Exchange Name	NYSE