v3.25.4
Goodwill And Other Intangible Assets (Schedule Of Amortized Intangible Assets) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Weighted-Average Life 21 years 2 months 12 days  
Gross Carrying Amount $ 3,624 $ 3,391
Accumulated Amortization 854 994
Currency Translation Adjustment $ (79) (423)
Wireless Licenses    
Finite-Lived Intangible Assets [Line Items]    
Weighted-Average Life 21 years 3 months 18 days  
Gross Carrying Amount $ 3,582 2,999
Accumulated Amortization 831 696
Currency Translation Adjustment (73) (343)
Customer lists and relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 0 349
Accumulated Amortization 0 275
Currency Translation Adjustment $ 0 (74)
Trademarks, trade names and other    
Finite-Lived Intangible Assets [Line Items]    
Weighted-Average Life 13 years 2 months 12 days  
Gross Carrying Amount $ 42 43
Accumulated Amortization 23 23
Currency Translation Adjustment $ (6) $ (6)