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Note 11 - Pension and Postretirement Benefit Plans (Details Textual) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) Rate
Period of Forecast (Year) | 10 years
Minimum [Member] |
Multiemployer Plans, Green Zone, Percentage (Rate) | 80.00%
Multiemployer Plans, Yellow Zone, Percentage (Rate) | 65.00%
Multi-employer Plan, Employer Contribution, Percentage (Rate) | 5.00%
Maximum [Member] |
Multiemployer Plans, Red Zone, Percentage (Rate) | 65.00%
UNITED STATES | Pension Plan [Member] |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets, Next Fiscal Year | 6.00%
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year | $ | $ 5
Foreign Plan [Member] | Pension Plan [Member] |
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year | $ | $ 17
Growth Portfolio [Member] | UNITED STATES | Pension Plan [Member] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 21.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage | 21.00%
Immunizing Portfolio [Member] | UNITED STATES | Pension Plan [Member] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 77.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage | 76.00%
Liquidity Portfolio [Member] | UNITED STATES | Pension Plan [Member] |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 2.00%
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage | 3.00%

X
- Definition An assumption as to next year's average rate of return on plan assets expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References No definition available. + Details
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X
- Definition The maximum percentage that the employer's contributions compare to the total contributions to the multiemployer plan made by all employers. + References No definition available. + Details
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Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the level funded, expressed as a percentage, at which multiemployer plans are certified in the green zone. + References No definition available. + Details
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- Definition Represents the level funded, expressed as a percentage, at which multiemployer plans are certified in the red zone. + References No definition available. + Details
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- Definition Represents the level funded, expressed as a percentage, at which multiemployer plans are certified in the yellow zone. + References No definition available. + Details
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- Definition Represents the period of forecast used for the expected rate of return on plan assets. + References No definition available. + Details
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X
- Definition Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-18 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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X
- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Details
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