Annual report pursuant to Section 13 and 15(d)

Cover Page

Cover Page - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Feb. 23, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2020    
Document Transition Report false    
Entity File Number 001-14039    
Entity Registrant Name Callon Petroleum Co    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 64-0844345    
Entity Address, Address Line One One Briarlake Plaza    
Entity Address, Address Line Two 2000 W. Sam Houston Parkway S., Suite 2000    
Entity Address, City or Town Houston,    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77042    
City Area Code 281    
Local Phone Number 589-5200    
Title of 12(b) Security Common Stock, $0.01 par value    
Trading Symbol CPE    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 443.3
Entity Common Stock, Shares Outstanding   46,153,710  
Documents Incorporated by Reference Portions of the definitive proxy statement of Callon Petroleum Company (to be filed no later than 120 days after December 31, 2020) relating to the 2021 Annual Meeting of Shareholders, which are incorporated into Part III of this Form 10-K.    
Entity Central Index Key 0000928022    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Amendment Flag false