Note 5 - Retirement Plans - Benefit Payments (Details) $ in Millions |
Dec. 31, 2021
USD ($)
|
|---|---|
| 2022 | $ 229 |
| 2023 | 228 |
| 2024 | 227 |
| 2025 | 227 |
| 2026 | 228 |
| Years 2027 - 2031 | $ 1,170 |
| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|