PROPERTY, PLANT AND EQUIPMENT (Tables)

6 Months Ended

Mar. 31, 2019

PROPERTY, PLANT AND EQUIPMENT

Summary of property, plant and equipment

Property, plant and equipment as of March 31, 2019 and September 30, 2018 consisted of the following (in thousands):

	Estimated Useful Lives	March 31, 2019		September 30, 2018
Contract drilling equipment	4 - 15 years	$	8,636,213	$	8,442,081
Real estate properties	10 - 45 years		69,937		68,888
Other	2 - 23 years		481,053		471,310
Construction in progress			189,831		163,968
			9,377,034		9,146,247
Accumulated depreciation			(4,490,086)		(4,288,865)
Property, plant and equipment, net		$	4,886,948	$	4,857,382