Property, Plant and Equipment

12 Months Ended

Dec. 31, 2018

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,
	2018		2017
	(In thousands)
Land	$	43,187	$	52,000
Buildings		123,619		134,318
Drilling rigs and related equipment		13,021,580		12,997,470
Marine transportation and supply vessels		—		4,377
Oilfield hauling and mobile equipment		267,223		272,384
Other machinery and equipment		197,094		172,674
Oil and gas properties		12,286		12,286
Construction-in-process (1)		30,395		284,348
	$	13,695,384	$	13,929,857
Less: accumulated depreciation and amortization		(8,227,514)		(7,820,292)
	$	5,467,870	$	6,109,565

(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, 2018 or 2017.

Depreciation expense included in depreciation and amortization expense in our consolidated statements of income (loss) totaled $860.1 million, $835.9 million and $855.4 million during 2018,  2017 and 2016, respectively.

Repair and maintenance expense included in direct costs in our consolidated statements of income (loss) totaled  $265.6 million, $241.4 million and $151.8 million during 2018,  2017 and 2016, respectively.

Interest costs of $1.0 million, $2.5 million and $6.7 million were capitalized during 2018,  2017 and 2016, respectively.