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Restructuring Charges (Restructuring Costs Expensed) (Details) - USD ($)
$ in Millions
12 Months Ended 24 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2025
Restructuring Charges [Abstract]        
Severance and Outplacement $ 12 $ 27 $ 0  
Restructuring Expenses $ 12 $ 27 $ 0 $ 39