Property and Equipment (Tables)

9 Months Ended

Jun. 30, 2015

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)	June 30, 2015			September 30, 2014
Drilling vessels and equipment	$	4,032,126		$	4,181,774
Construction work in progress	684,522			319,548
Drill pipe	42,734			31,265
Office equipment and other	36,378			35,566
Total cost	4,795,760			4,568,153
Less: Accumulated depreciation	(606,966		)	(601,125		)
Property and equipment, net	$	4,188,794		$	3,967,028

Schedule of Expected Delivery Dates and Status

The expected delivery dates of the Atwood Admiral and Atwood Archer are as follows:

	Atwood Admiral		Atwood Archer
	Expected Delivery	Status	Expected Delivery	Status
Prior to supplemental agreements	3/31/2015		12/31/2015
Supplemental Agreement No. 1:	9/30/2015	Exercised	6/30/2016	Exercised
Supplemental Agreement No. 2:
Option No. 1	3/31/2016	Exercised	12/31/2016	Unexercised
Option No. 2	9/30/2016	Unexercised	6/30/2017	Unexercised

Long-term Purchase Commitment

s for the Atwood Admiral and Atwood Archer are as follows:

(In millions)	Date	Atwood Admiral		Atwood Archer
Final payment	3/31/2016	$	146
Final payment	6/30/2016			$	358
Total		$	146	$	358