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Leases (Maturities Of Lease Liabilities) (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Leases [Abstract]    
Operating Leases, One year or less $ 121  
Operating Leases, One year to two years 117  
Operating Leases, Two years to three years 110  
Operating Leases, Three years to four years 92  
Operating Leases, Fours years to five years 63  
Operating Leases, Thereafter 183  
Operating Leases, Total lease payments 686  
Operating Leases, Less imputed interest (158)  
Operating leases, Total 528 $ 464
Finance Leases, One year or less 19  
Finance Leases, One year to two years 19  
Finance Leases, Two years to three years 15  
Finance Leases, Three years to four years 7  
Finance Leases, Fours years to five years 5  
Finance Leases, Total lease payments 65  
Finance Leases, Less imputed interest (16)  
Finance Leases, Total $ 49 $ 46