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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2022
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, |
​ |  | 2022 |  | 2021 |
​ | ​ | (In thousands) |
Land | ​ | $ | 22,672 | ​ | $ | 22,955 | ​
Buildings | ​ |  | 134,063 | ​ |  | 130,917 | ​
Drilling rigs and related equipment | ​ |  | 11,722,404 | ​ |  | 11,718,450 | ​
Oilfield hauling and mobile equipment | ​ |  | 233,708 | ​ |  | 243,850 | ​
Other machinery and equipment | ​ |  | 216,233 | ​ |  | 200,740 | ​
​ | ​ | $ | 12,329,080 | ​ | $ | 12,316,912 | ​
Less: accumulated depreciation and amortization | ​ |  | (9,302,980) | ​ |  | (8,968,414) | ​
​ | ​ | $ | 3,026,100 | ​ | $ | 3,348,498 | ​
Depreciation expense included in depreciation and amortization expense in our consolidated statements of income (loss) totaled $663.1 million, $689.2 million and $851.8 million during 2022, 2021 and 2020, respectively. ​ Repair and maintenance expense included in direct costs in our consolidated statements of income (loss) totaled $202.5 million, $153.9 million and $154.2 million during 2022, 2021 and 2020, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126982197&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916 + Details
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