Quarterly report pursuant to Section 13 or 15(d)

DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS (Details)

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DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS (Details) - USD ($)
 6 Months Ended 9 Months Ended
Jul. 01, 2019
Sep. 30, 2019
Sep. 30, 2020
Dec. 31, 2019
Apr. 10, 2019
Proceeds from Issuance Initial Public Offering   $ 677,788,000 $ 0    
Proceeds from Issuance of Warrants   15,800,000 0    
Transaction Cost Related To Issuance Of Common Stock $ 34,319,807        
Underwriting Discount 12,212,000        
Deferred Underwriting Discount Payable Non current 21,371,000        
Other Offering Costs Related To Issuance Of Common Stock 736,807        
Cash   $ 2,223,724 $ 1,744,991 $ 2,238,275 $ 0
Working Capital Requirement Fund Annual Limit $ 250,000        
Temporary Equity, Redemption Price Per Share $ 10.00        
Maximum Percentage Of Shares Eligible From Redemption 15.00%        
Dissolution Expenses Payable $ 100,000        
IPO [Member]          
Stock Issued During Period, Shares, New Issues 69,000,000        
Shares Issued, Price Per Share $ 10.00        
Proceeds from Issuance Initial Public Offering $ 690,000,000        
Over-Allotment Option [Member]          
Stock Issued During Period, Shares, New Issues 9,000,000        
Shares Issued, Price Per Share $ 10.00        
Private Placement [Member]          
Number Of Warrants Issued 15,800,000        
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 1.00        
Proceeds from Issuance of Warrants $ 15,800,000        
Churchill Sponsor LLC [Member]          
Business Combination Aggregate Fair Market Value On Assets Held In Trust Percentage 80.00%        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets $ 5,000,001