PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Nov. 30, 2022 rig	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) rig	Sep. 30, 2023 USD ($)
Property, Plant and Equipment [Line Items]
Depreciation		$ 92,400	$ 94,900
Abandonments included in depreciation		500	1,200
Rigs damaged by fire | rig	1
Abandonment expense			9,200
Property, plant and equipment, net		2,970,371		$ 2,921,695
Asset impairment charges		0	12,097
Gain on reimbursement of drilling equipment		$ 7,494	$ 15,724
International FlexRig
Property, Plant and Equipment [Line Items]
Number of rigs, held-for -sale | rig			4
Property, plant and equipment, net			$ 8,800
Property, plant, and equipment, salvage value			700
Asset impairment charges			$ 8,100
Conventional Drilling Rigs
Property, Plant and Equipment [Line Items]
Number of rigs, held-for -sale | rig			4
Assets Previously Held For Sale
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net			$ 3,000
Property, plant, and equipment, salvage value			300
Asset impairment charges			2,700
Additional Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net			1,400
Property, plant, and equipment, salvage value			100
Asset impairment charges			$ 1,300