Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 613,100	$ 721,000	$ 683,000	$ 672,700	$ 669,600	$ 753,200	$ 801,000	$ 794,800	$ 2,689,845	$ 3,018,598	$ 3,448,854
Gain (loss) on derivative instruments									5,927	(1,707)	0
Gain on sale of assets and other operating income									23,051	11,583	11,293
Total revenues and other income									2,718,823	3,028,474	3,460,147
Revenue from production
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									2,689,845	3,014,856	3,376,639
Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									2,227,343	2,635,660	2,916,252
Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									80,173	79,165	89,526
Net natural gas revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									382,329	300,031	370,861
Sales of purchased natural gas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	3,742	72,215
United States - Onshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									617,358	586,584	676,139
United States - Onshore | Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									41,518	32,853	33,178
United States - Onshore | Net natural gas revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									35,524	17,443	21,346
United States Offshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									1,355,527	1,777,723	2,072,353
United States Offshore | Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									33,029	38,858	47,434
United States Offshore | Net natural gas revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									70,968	50,329	71,332
Canada - Onshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									61,715	70,855	78,088
Canada - Onshore | Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									5,626	7,454	8,914
Canada - Onshore | Net natural gas revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									275,837	232,259	278,183
Canada - Onshore | Sales of purchased natural gas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	3,742	72,215
Canada - Offshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									187,030	193,961	78,650
Other | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									$ 5,713	$ 6,537	$ 11,022