Annual report [Section 13 and 15(d), not S-K Item 405]

SUPPLEMENTAL OIL AND GAS DISCLOSURES (UNAUDITED) - Standardized Measure of Discounted Future Net Cash Flows (Details)

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SUPPLEMENTAL OIL AND GAS DISCLOSURES (UNAUDITED) - Standardized Measure of Discounted Future Net Cash Flows (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Standardized Measure of Discounted Future Net Cash Flows        
Future cash inflows $ 5,123.1 $ 4,282.3 $ 8,856.0  
Production (2,361.9) (2,007.6) (2,895.0)  
Development and abandonment (1,645.0) (1,052.3) (990.0)  
Income taxes (215.9) (210.3) (1,006.0)  
Future net cash inflows 900.3 1,012.1 3,965.0  
10% annual discount factor (160.2) (328.9) (1,702.0)  
Standardized measure of discounted future net cash flows $ 740.1 $ 683.2 $ 2,263.0 $ 1,156.0