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Stock-Based Compensation (Schedule of Unrecognized Compensation Costs and Amortization Periods) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2023
USD ($)
Stock Options  
Share-based Compensation Arrangement by Share-based Payment Award  
Stock options $ 4
Weighted-Average Service Years 6 months
Restricted share units  
Share-based Compensation Arrangement by Share-based Payment Award  
Total remaining unrecognized compensation costs, nonvested awards other than options $ 64
Weighted-Average Service Years 1 year 4 months 24 days
Performance-based restricted share units  
Share-based Compensation Arrangement by Share-based Payment Award  
Total remaining unrecognized compensation costs, nonvested awards other than options $ 29
Weighted-Average Service Years 1 year 8 months 12 days