PROPERTY AND EQUIPMENT (Tables)

3 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Summary of Property and Equipment by Classification

A summary of property and equipment by classification is as follows:

(In thousands)	December 31, 2016			September 30, 2016
Drilling vessels and equipment	$	3,909,804		$	3,898,686
Construction work in progress	981,351			857,572
Drill pipe	49,877			52,543
Office equipment and other	39,173			39,213
Total cost	4,980,205			4,848,014
Less: Accumulated depreciation	(757,049		)	(720,318		)
Property and equipment, net	$	4,223,156		$	4,127,696