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Note 10 - Redeemable, Convertible Preferred Stock (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Temporary Equity [Table Text Block]
   

December 31,

   

December 31,

 

(in millions)

 

2022

   

2021

 

Series B preferred stock

  $ 95     $ 94  

Series C preferred stock

    108       102  

Total

  $ 203     $ 196