Property, Plant and Equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment

Property, Plant and Equipment

Note 8 Property, Plant and Equipment

The major components of our property, plant and equipment are as follows:

	December 31,
	2019		2018
	(In thousands)
Land	$	33,931	$	43,187
Buildings		132,603		123,619
Drilling rigs and related equipment		12,948,504		13,021,580
Oilfield hauling and mobile equipment		270,826		267,223
Other machinery and equipment		192,081		197,094
Oil and gas properties		12,286		12,286
Construction-in-process (1)		25,391		30,395
	$	13,615,622	$	13,695,384
Less: accumulated depreciation and amortization		(8,685,073)		(8,227,514)
	$	4,930,549	$	5,467,870

(1) Relates primarily to amounts capitalized for new or substantially new drilling rigs and related equipment that were under construction and had not yet been placed in service as of December 31, 2019 or 2018.

Depreciation expense included in depreciation and amortization expense in our consolidated statements of income (loss) totaled $869.6 million, $860.6 million and $835.9 million during 2019, 2018 and 2017, respectively.

Repair and maintenance expense included in direct costs in our consolidated statements of income (loss) totaled $248.6 million, $265.6 million and $241.4 million during 2019, 2018 and 2017, respectively.

Interest costs of $1.5 million, $1.0 million and $2.5 million were capitalized during 2019, 2018 and 2017, respectively.