v3.26.1
Restructuring Charges (Restructuring Costs Expensed) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Restructuring Charges [Abstract]      
Severance and Outplacement $ 0 $ 10  
Restructuring Expenses $ 0 $ 10 $ 12