Annual report pursuant to Section 13 and 15(d)

COMMITMENTS (Details)

v3.24.0.1
COMMITMENTS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Expense Relating To Surety Bonds Paid $ 7.4 $ 8.3 $ 6.0
Drilling Commitments [Member]      
Other Commitment Expense 9.9    
Surety Bonds [Member] | Other Commitment [Member]      
Bonding Requirement, Related To Purchase of Properties Minimum Amount 64.0    
Bonding Requirement Related To Purchase of Properties Maximum Amount 94.0    
Surety Bonds [Member] | Total E&P [Member]      
Bonding Requirement Related to Purchase of Properties Amount Current Year. 103.0    
Escrow Deposit 0.4    
Surety Bonds [Member] | Exxon [Member]      
Bonding Requirement, Related To Purchase of Properties Minimum Amount 36.3    
Other Commitment, Fiscal Year Maturity [Abstract]      
2024 44.0    
2025 48.3    
2026 53.2    
2027 58.5    
Thereafter 114.0    
Surety Bonds [Member] | Exxon [Member] | Minimum [Member]      
Annual Increase In Other Commitment 10.4    
Surety Bonds [Member] | Exxon [Member] | Maximum [Member]      
Annual Increase In Other Commitment 5.9    
Surety Bonds [Member] | Conoco [Member]      
Bonding Requirement, Related To Purchase of Properties Minimum Amount 49.0    
Heidelberg Field [Member]      
Other Commitment Expense $ 1.0 $ 1.6 $ 2.1