Annual report pursuant to Section 13 and 15(d)

Borrowings (Senior Unsecured Notes) (Details)

v3.20.4
Borrowings (Senior Unsecured Notes) (Details) - USD ($)
12 Months Ended
Apr. 15, 2021
Dec. 20, 2020
Jun. 07, 2018
Oct. 03, 2016
Dec. 31, 2020
Nov. 02, 2020
Dec. 20, 2019
Aug. 31, 2018
6.25% Senior Notes due 2023                
Debt Instrument [Line Items]                
Debt instrument, interest rate, stated (as a percent)       6.25% 6.25%   6.25%  
Debt instrument redemption price percent (as a percent)   101.00%            
6.125% Senior Notes due 2024                
Debt Instrument [Line Items]                
Debt instrument, interest rate, stated (as a percent)       6.125% 6.125%      
6.125% Senior Notes due 2024 | Change Of Control                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)       101.00%        
8.25% Senior Notes due 2025                
Debt Instrument [Line Items]                
Debt instrument, interest rate, stated (as a percent)         8.25%   8.25%  
6.375% Senior Notes due 2026                
Debt Instrument [Line Items]                
Debt instrument, interest rate, stated (as a percent)         6.375%      
Unsecured debt                
Debt Instrument [Line Items]                
Debt instrument principal amount           $ 389,000,000.0    
Unsecured debt | Callon Petroleum Operating Company                
Debt Instrument [Line Items]                
Ownership percentage by parent         100.00%      
Unsecured debt | 6.375% Senior Notes due 2026                
Debt Instrument [Line Items]                
Debt instrument, interest rate, stated (as a percent)     6.375%         6.375%
Debt instrument principal amount     $ 400,000,000.0          
Net proceeds from issuance of senior unsecured notes     $ 394,000,000.0          
Unsecured debt | 6.375% Senior Notes due 2026 | Change Of Control                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)     101.00%          
On or After October 1, 2021, but Before October 1, 2022 | 6.25% Senior Notes due 2023                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)       103.125%        
On or After October 1, 2022 | 6.25% Senior Notes due 2023 | Forecast                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent) 100.00%              
On or After October 1, 2022 | 6.125% Senior Notes due 2024                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)       100.00%        
On or After October 1, 2022 | 8.25% Senior Notes due 2025                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)   101.00%   106.188% 100.00%      
On or After October 1, 2019, but Before October 1, 2020 | 6.125% Senior Notes due 2024                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)       104.594%        
Prior to July 1, 2021, a Redemption of up to 35% of the Principal | Unsecured debt | 6.375% Senior Notes due 2026                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)     106.375%          
Number of days to closing date of equity offerings     180 days          
Prior to July 1, 2021, a Redemption of up to 35% of the Principal | Unsecured debt | 6.375% Senior Notes due 2026 | Minimum                
Debt Instrument [Line Items]                
Redemption principal remaining amount percentage (as a percent)     65.00%          
Prior to July 1, 2021, a Redemption of up to 35% of the Principal | Unsecured debt | 6.375% Senior Notes due 2026 | Maximum                
Debt Instrument [Line Items]                
Redemption principal amount percentage (as a percent)     35.00%          
Prior to July 1, 2021, a Redemption of All or Part of the Principal | Unsecured debt | 6.375% Senior Notes due 2026                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)     100.00%          
On or After July 1, 2021, but Before July 1, 2022 | Unsecured debt | 6.375% Senior Notes due 2026                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)     103.188%          
On or After July 1, 2024 | Unsecured debt | 6.375% Senior Notes due 2026                
Debt Instrument [Line Items]                
Debt instrument redemption price percent (as a percent)     100.00%