Annual report pursuant to Section 13 and 15(d)

Note 19 - Supplemental Oil and Gas Disclosures - Unaudited - Capitalized Costs Related to Oil and Natural Gas (Details)

v3.20.4
Note 19 - Supplemental Oil and Gas Disclosures - Unaudited - Capitalized Costs Related to Oil and Natural Gas (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Proved oil and natural gas properties and equipment $ 8,567.5 $ 8,532.2 $ 8,169.9
Accumulated depreciation, depletion and amortization related to oil, NGLs and natural gas activities (7,890.9) (7,793.3) (7,665.1)
Net capitalized costs related to producing activities $ 676.6 $ 738.9 $ 504.8