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Note 20 - Other Postretirement Benefits (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Schedule of Changes in Projected Benefit Obligations [Table Text Block]
  

Year Ended December 31,

 

(in millions)

  2023   2022 

Net benefit obligation at beginning of period

 $43  $52 

Interest cost

  2   1 

Actuarial gain

     (7)

Benefit payments

  (2)  (3)

Net benefit obligation at end of period

 $43  $43 
         

Underfunded status at end of period

  (43)  (43)
Schedule Of Amounts From Other Post Retirement Plan Recognized In Balance Sheet Table [Text Block]
  

As of December 31,

 

(in millions)

  2023   2022 

Other current liabilities

 $(3) $(3)

Pension and other postretirement liabilities

  (40)  (40)
  $(43) $(43)
Schedule Of Amounts Recognized In Accumulated Other Comprehensive Income Loss Table [Text Block]
  

As of December 31,

 

(in millions)

  2023   2022 

Net actuarial gain

 $10  $11 
Schedule Of Other Post Retirement Plan Recognized In Other Comprehensive Income Loss Table [Text Block]
  

Year Ended December 31,

 

(in millions)

  2023   2022 

Newly established gain

 $  $7 

Total gain recognized in Other comprehensive loss (income)

 $  $7 
Schedule Of Other Post Retirement Plan Net Benefit Costs Table [Text Block]
  

Year Ended December 31,

 

(in millions)

  2023   2022   2021 

Components of net postretirement benefit cost:

            

Service cost

 $  $  $ 

Interest cost

  2   1   1 

Amortization of:

            

Actuarial gain

  (1)      

Other postretirement benefit cost from continuing operations

 $1  $1  $1 
Schedule Of Assumptions Used To Calculate Other Post Retirement Plan Net Benefit Obligation Table [Text Block]
  

As of December 31,

 
  

2023

  

2022

 

Discount rate

  4.64%  5.15%

Salary increase rate

  1.85%  2.10%
Schedule Of Assumptions Used To Calculate Other Post Retirement Plan Net Benefit Costs Table [Text Block]
  

Year Ended December 31,

 
  

2023

  

2022

  

2021

 

Effective rate for interest cost

  5.13%  2.53%  1.81%

Salary increase rate

  2.10%  1.85%  1.70%
Other Post Retirement Benefits Schedule of Health Care Cost Trend Rates [Table Text Block]
  

2023

  

2022

 

Healthcare cost trend

  5.73%  5.64%

Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)

  3.32%  3.57%

Year that the rate reaches the ultimate trend rate

 

2040

  

2043

 
Schedule of Expected Other Postretirement Benefit Payments [Table Text Block]

2024

 $3 

2025

  3 

2026

  3 

2027

  3 

2028

  3 
2029 - 2033  12