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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Balances of Other Property and Equipment and Accumulated Depreciation (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ (3,855,346)	$ (3,547,196)
Net property and equipment	6,756,314	6,215,494
Other property and equipment	477,395	386,656
Total	466,950	379,760
Midstream Assets
Property, Plant and Equipment [Line Items]
Gross property and equipment	454,482	363,855
Accumulated depreciation	(7,708)	(4,914)
Net property and equipment	446,774	358,941
Other Property and Equipment
Property, Plant and Equipment [Line Items]
Other property and equipment	22,913	22,801
Accumulated depreciation	(2,737)	(1,982)
Net other property and equipment	$ 20,176	$ 20,819

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