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Restructuring (Schedule Of The Activity And Balances Associated With Restructuring Liabilities) (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Restructuring Cost And Reserve [Line Items]    
Beginning balance $ 115 $ 149
Ending balance 92 127
Prior years' restructurings [Member]    
Restructuring Cost And Reserve [Line Items]    
Restructuring reserve activity (23) (22)
Other Current Liabilities [Member]    
Restructuring Cost And Reserve [Line Items]    
Beginning balance 34 38
Ending balance 15 28
Other Current Liabilities [Member] | Prior years' restructurings [Member]    
Restructuring Cost And Reserve [Line Items]    
Restructuring reserve activity (19) (10)
Other Long-Term Liabilities [Member]    
Restructuring Cost And Reserve [Line Items]    
Beginning balance 81 111
Ending balance 77 99
Other Long-Term Liabilities [Member] | Prior years' restructurings [Member]    
Restructuring Cost And Reserve [Line Items]    
Restructuring reserve activity $ (4) $ (12)