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Summary of Significant Accounting Policies, Part 3 (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Environmental Costs [Abstract] |  |  |  |
Environmental reserves - current portion |  | $ 2 | $ 3 |
Asset Impairment Charges [Abstract] |  |  |  |
Impairment of property, plant and equipment |  | 41 | 218 | $ 590
Impairment of goodwill |  | 0 | 0 | 296
Other impairments | [1] | 12 | 15 | 4
Impairment charges in operating costs and expenses |  | 53 | 233 | 890
Total asset impairment charges |  | 53 | 233 | 890
Environmental Reserves [Member] |  |  |  |
Movement in valuation allowances and reserves [Roll Forward] |  |  |  |
Balance at beginning of period |  | 4 | 5 | 7
Charged to costs and expenses |  | 13 | 6 | 6
Acquisition-related additions and other |  | 1 | 1 | 3
Deductions |  | (15) | (8) | (11)
Balance at end of period |  | $ 3 | $ 4 | $ 5
[1] | Primarily represents the write-down of surplus materials classified as current assets and intangible assets other than goodwill.

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