v3.26.1
Fair Value Measurements And Disclosure (Effect Of Derivatives On The Consolidated Statements Of Income) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Interest rate swaps    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) on interest rate swaps $ (1) $ (1)
Gain (loss) on long-term debt 1 1
Cross-currency swaps    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) on interest rate swaps (587) 1,124
Gain (loss) on long-term debt 587 (1,124)
Gain (loss) recognized in accumulated OCI (375) (831)
Gain (loss) recognized in accumulated OCI 12 4
Interest rate locks    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount reclassified from accumulated OCI into income $ (15) $ (15)