Note 12 - Employee Benefit Plans - Components of Net Benefit Costs (Details) - USD ($) $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
|||
| Amortization of actuarial loss | $ 8 | $ 8 | ||
| Defined Benefit Plans [Member] | ||||
| Service cost | 7 | 6 | ||
| Interest cost | [1] | 22 | 23 | |
| Expected return on assets | (32) | (31) | ||
| Amortization of prior service benefit | (1) | (1) | ||
| Amortization of actuarial loss | [1] | 8 | 8 | |
| Net periodic benefit cost | 4 | 5 | ||
| Other Postretirement Benefits Plan [Member] | ||||
| Service cost | 0 | 0 | ||
| Interest cost | [1] | 1 | 1 | |
| Expected return on assets | 0 | 0 | ||
| Amortization of prior service benefit | (1) | (1) | ||
| Amortization of actuarial loss | [1] | 0 | 0 | |
| Net periodic benefit cost | $ 0 | $ 0 | ||
| ||||
| X | ||||||||||
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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