Note 6 - Other Income - Schedule of Other Income (Details) - USD ($) $ in Millions |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Rental income | $ 136 | $ 123 | $ 124 | ||
| Gain on non-operating asset dispositions [a] | [1] | 98 | 115 | 20 | |
| Gain from sale of investment | 36 | 0 | 0 | ||
| Net periodic pension costs | 25 | 41 | 46 | ||
| Interest income | 5 | 12 | 32 | ||
| Interest income on employment tax refund | 0 | 0 | 31 | ||
| Other | (3) | (4) | (10) | ||
| Total | $ 297 | $ 287 | $ 243 | ||
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| X | ||||||||||
- Definition The amount of interest income due to employment tax refund. No definition available.
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| X | ||||||||||
- Definition The amount of income (expense) from other nonoperating activities not otherwise specified. No definition available.
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| X | ||||||||||
- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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