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Note 17 - Segment Information - Summary of Reconciliation of Reportable Segment Revenues to Consolidated Revenues (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues $ 269 $ 261 $ 779 $ 777
All Other Revenues        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues 4 3 12 11
Operating Segments        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues $ 265 $ 258 $ 767 $ 766