Property and Equipment (Tables)

3 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

A Summary of Property and Equipment by Classification

A summary of property and equipment by classification is as follows (in thousands):



(In thousands)	December 31, 2012			September 30, 2012
Drilling vessels and equipment	$	2,727,429		$	2,523,895
Construction work in progress	575,820			438,081
Drill pipe	20,658			20,576
Office equipment and other	22,099			19,610
Cost	3,346,006			3,002,162
Less: Accumulated depreciation	(491,491		)	(464,822		)
Drilling and other property and equipment, net	$	2,854,515		$	2,537,340

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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