v3.26.1
Short-Term Debt (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Short-term Debt [Line Items]    
Amount outstanding at period end $ 2,510 $ 1,550
Commercial Paper    
Short-term Debt [Line Items]    
Borrowing limit 6,250 4,750
Amount outstanding at period end 2,510 1,550
Average amount outstanding 1,863 1,026
Maximum amount outstanding $ 2,510 $ 2,965
Weighted average interest rate, computed on a daily basis 4.38% 4.41%
Weighted average interest rate at period end 4.31% 3.95%
Letter of Credit    
Short-term Debt [Line Items]    
Amount outstanding at period end $ 92 $ 92