Note 5 - Retirement Plans - Amounts Recognized in the Statement of Financial Position (Details) - Pension Plan [Member] - USD ($) $ in Millions |
Dec. 31, 2022 |
Dec. 31, 2021 |
|---|---|---|
| Noncurrent assets | $ 1,033 | $ 807 |
| Current liabilities | (31) | (31) |
| Noncurrent liabilities | (364) | (518) |
| Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position, Total | $ 638 | $ 258 |
| X | ||||||||||
- Definition Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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