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v3.22.2

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | $ 11,918 |  | $ 11,918 |  | $ 11,526
Allowance for depreciation and depletion | (2,871) |  | (2,871) |  | (2,340)
Property, plant and equipment, net | 9,047 |  | 9,047 |  | 9,186
Finance lease, right-of-use asset | 389 |  | 389 |  | 411
Depreciation and depletion expense | 249 | $ 208 | 547 | $ 423 |
Middletown |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Restructuring and Related Cost, Accelerated Depreciation | 23 |  | 23 |  |
Indiana Harbor |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Restructuring and Related Cost, Accelerated Depreciation |  |  | 68 |  |
Land, land improvements and mineral rights |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | 1,400 |  | 1,400 |  | 1,291
Buildings |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | 906 |  | 906 |  | 889
Equipment |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | 8,765 |  | 8,765 |  | 8,709
Other |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | 230 |  | 230 |  | 229
Construction in progress |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | $ 617 |  | $ 617 |  | $ 408

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