PROPERTY, PLANT AND EQUIPMENT (Tables)

6 Months Ended

Mar. 31, 2021

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment as of March 31, 2021 and September 30, 2020 consisted of the following:

(in thousands)	Estimated Useful Lives	March 31, 2021		September 30, 2020
Drilling services equipment	4 - 15 years	$	6,479,582	$	7,313,234
Tubulars	4 years	606,036		615,281
Real estate properties	10 - 45 years	43,398		43,389
Other	2 - 23 years	468,392		464,704
Construction in progress (1)		52,383		49,592
		7,649,791		8,486,200
Accumulated depreciation		(4,275,556)		(4,839,859)
Property, plant and equipment, net		$	3,374,235	$	3,646,341
Assets held-for-sale		$	13,076	$	—

(1)Included in construction in progress are costs for projects in progress to upgrade or refurbish certain rigs in our existing fleet.  Additionally, we include other capital maintenance purchase-orders that are open/in process.  As these various projects are completed, the costs are then classified to their appropriate useful life category.