v3.25.2
Fair Value Measurements And Disclosure (Effect Of Derivatives On The Consolidated Statements Of Income) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Interest rate swaps        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on interest rate swaps $ (1) $ (1) $ (2) $ (1)
Gain (loss) on long-term debt 1 1 2 1
Cross-currency swaps        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on interest rate swaps 2,735 (178) 3,859 (424)
Gain (loss) on long-term debt (2,735) 178 (3,859) 424
Gain (loss) recognized in accumulated OCI 128 (325) (703) (70)
Gain (loss) recognized in accumulated OCI 0 0 4 5
Interest rate locks | Interest income (expense)        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount reclassified from accumulated OCI into income $ (14) $ (14) $ (29) $ (29)