Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment
Property, plant and equipment, gross	$ 13,248,255	$ 12,755,422
Less: accumulated depreciation and amortization	(10,328,236)	(9,924,465)
Property, Plant and Equipment, Net	2,920,019	2,830,957	$ 2,898,728
Depreciation expense	648,800	632,900	644,900
Repair and maintenance expense	207,700	199,200	$ 228,200
Land
Property, Plant and Equipment
Property, plant and equipment, gross	27,541	31,529
Buildings
Property, Plant and Equipment
Property, plant and equipment, gross	172,458	158,518
Drilling rigs and related equipment
Property, Plant and Equipment
Property, plant and equipment, gross	12,561,048	12,084,276
Oilfield hauling and mobile equipment
Property, Plant and Equipment
Property, plant and equipment, gross	227,386	228,730
Other machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	$ 259,822	$ 252,369