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PROPERTY, PLANT AND EQUIPMENT | 12 Months Ended
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Dec. 31, 2022
Property, Plant and Equipment [Abstract] |
PROPERTY, PLANT AND EQUIPMENT | NOTE 6 - PROPERTY, PLANT AND EQUIPMENT The following table indicates the carrying value of each of the major classes of our depreciable assets:
| December 31,
(In millions) | 2022 |  | 2021
Land, land improvements and mineral rights | $ | 1,388 |  |  | $ | 1,291 |
Buildings | 921 |  |  | 889 |
Equipment | 9,289 |  |  | 8,709 |
Other | 238 |  |  | 229 |
Construction in progress | 552 |  |  | 408 |
Total property, plant and equipment 1 | 12,388 |  |  | 11,526 |
Allowance for depreciation and depletion | (3,318) |  |  | (2,340) |
Property, plant and equipment, net | $ | 9,070 |  |  | $ | 9,186 |
1 Includes right-of-use assets related to finance leases of $408 million and $411 million as of December 31, 2022 and 2021, respectively.
We recorded depreciation expense of $988 million, $848 million and $298 million for the years ended December 31, 2022, 2021 and 2020, respectively. Depreciation expense for the year ended December 31, 2022 includes $23 million of accelerated depreciation related to the decision to indefinitely idle the coke facility at Middletown Works and $68 million of accelerated depreciation related to the indefinite idle of the Indiana Harbor #4 blast furnace. During the year ended December 31, 2022, we announced the permanent closure of Mountain State Carbon, which resulted in a $29 million asset impairment charge. The net book value of the mineral and land rights are as follows:
| December 31,
(In millions) | 2022 |  | 2021
Mineral rights: |  |  |
Cost | $ | 780 |  |  | $ | 780 |
Depletion | (225) |  |  | (187) |
Net mineral rights | $ | 555 |  |  | $ | 593 |
Land rights | $ | 434 |  |  | $ | 406 |
We recorded depletion expense of $38 million, $46 million and $8 million for the years ended December 31, 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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