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v3.22.2.2

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | $ 12,118 |  | $ 12,118 |  | $ 11,526
Allowance for depreciation and depletion | (3,088) |  | (3,088) |  | (2,340)
Property, plant and equipment, net | 9,030 |  | 9,030 |  | 9,186
Finance lease, right-of-use asset | 389 |  | 389 |  | 411
Depreciation and depletion expense | 235 | $ 238 | 782 | $ 661 |
Middletown |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Accelerated depreciation |  |  | 23 |  |
Indiana Harbor |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Accelerated depreciation |  |  | 68 |  |
Land, land improvements and mineral rights |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | 1,396 |  | 1,396 |  | 1,291
Buildings |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | 914 |  | 914 |  | 889
Equipment |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | 9,042 |  | 9,042 |  | 8,709
Other |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | 232 |  | 232 |  | 229
Construction in progress |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Total property, plant and equipment | $ 534 |  | $ 534 |  | $ 408

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