Drilling and Other Property and Equipment (Tables)

6 Months Ended

Jun. 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):

	June 30,			December 31,
	2020			2019
Drilling rigs and equipment	$	6,995,388		$	8,004,489
Land and buildings		64,605			64,267
Office equipment and other		93,023			92,289
Cost		7,153,016			8,161,045
Less: accumulated depreciation		(2,866,840	)		(3,008,217	)
Drilling and other property and equipment, net	$	4,286,176		$	5,152,828