Note 13 - Restructuring, Impairment and Plant Closing Costs (Credits) - Cash and Noncash Restructuring Charges (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Reversal of reserves no longer required | $ (1) | $ (4) | $ (31) |
| Accelerated depreciation | 7 | ||
| Total restructuring, impairment and plant closing credits | 49 | (41) | (7) |
| Gain on sale of assets | (49) | ||
| Other noncash credits | (2) | 7 | |
| Initiatives 2019 and Prior [Member] | |||
| Restructuring Charges, Total | 5 | ||
| Initiatives 2020 [Member] | |||
| Restructuring Charges, Total | $ 38 | ||
| Initiatives 2018 and Prior [Member] | |||
| Restructuring Charges, Total | 6 | ||
| Initiatives 2019 [Member] | |||
| Restructuring Charges, Total | $ 8 | ||
| Initiatives 2017 and Prior [Member] | |||
| Restructuring Charges, Total | 2 | ||
| Initiatives 2018 [Member] | |||
| Restructuring Charges, Total | $ 15 | ||
| X | ||||||||||
- Definition Amount of gain on sale of land during the period due to restructuring. No definition available.
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| X | ||||||||||
- Definition The aggregate amount provided for estimated restructuring charges, asset impairment loss and plant closing cost incurred during an accounting period. No definition available.
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| X | ||||||||||
- Definition Represents the amount of other non-cash charges associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. No definition available.
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| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of accelerated depreciation charged against earnings associated with exit from or disposal of business activities or restructuring plan. No definition available.
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| X | ||||||||||
- Definition Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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