Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	$ 753,169	$ 953,766	$ 2,349,024	$ 2,606,584
(Loss) on derivative instruments	(1,344)	0	(1,344)	0
Gain on sale of assets and other income	6,506	5,879	9,834	9,365
Total revenues and other income	758,331	959,645	2,357,514	2,615,949
Revenue from production
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	753,169	945,889	2,345,282	2,541,956
Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	662,188	822,493	2,068,580	2,196,713
Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	20,348	23,400	58,238	69,360
Net natural gas revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	70,633	99,996	218,464	275,883
Sales of purchased natural gas
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	0	7,877	3,742	64,628
United States - Onshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	161,965	207,448	450,463	514,614
United States - Onshore | Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	8,134	9,953	23,281	24,763
United States - Onshore | Net natural gas revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	4,265	6,035	11,893	15,623
United States - Offshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	399,940	568,721	1,382,071	1,549,872
United States - Offshore | Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	9,812	10,908	29,523	37,078
United States - Offshore | Net natural gas revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	12,311	18,377	35,700	55,311
Canada - Onshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	20,852	20,610	54,305	61,868
Canada - Onshore | Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	2,402	2,539	5,434	7,519
Canada - Onshore | Net natural gas revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	54,057	75,584	170,871	204,949
Canada - Onshore | Sales of purchased natural gas
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	0	7,877	3,742	64,628
Canada - Offshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	80,226	22,272	178,327	63,273
Other | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from sales to customers	$ (795)	$ 3,442	$ 3,414	$ 7,086