Drilling and Other Property and Equipment (Tables)

9 Months Ended

Sep. 30, 2020

Property Plant And Equipment [Abstract]

Summary of Cost and Accumulated Depreciation of Drilling and Other Property and Equipment

Cost and accumulated depreciation of drilling and other property and equipment are summarized as follows (in thousands):

	September 30,			December 31,
	2020			2019
Drilling rigs and equipment	$	7,026,827		$	8,004,489
Land and buildings		64,076			64,267
Office equipment and other		92,216			92,289
Cost		7,183,119			8,161,045
Less: accumulated depreciation		(2,940,013	)		(3,008,217	)
Drilling and other property and equipment, net	$	4,243,106		$	5,152,828