v3.19.3
Document And Entity Information - shares
9 Months Ended
Sep. 30, 2019
Oct. 31, 2019
Cover [Abstract]    
Document Type 10-Q  
Document Period End Date Sep. 30, 2019  
Amendment Flag false  
Entity Registrant Name Riviera Resources, Inc.  
Entity Central Index Key 0001737204  
Current Fiscal Year End --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   58,542,423
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity File Number 333-225927  
Entity Tax Identification Number 82-5121920  
Entity Address, Address Line One 600 Travis Street  
Entity Address, Address Line Two Suite 1700  
Entity Address, City or Town Houston  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77002  
City Area Code 281  
Local Phone Number 840-4000  
Entity Interactive Data Current Yes  
Entity Incorporation, State or Country Code DE  
Document Quarterly Report true  
Document Transition Report false