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Stock-Based Compensation (Schedule of Unrecognized Compensation Costs and Amortization Periods) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
Stock options  
Share-based Compensation Arrangement by Share-based Payment Award  
Stock options $ 1
Weighted-Average Service Years 3 months 18 days
Restricted shares and time-vested restricted share units  
Share-based Compensation Arrangement by Share-based Payment Award  
Total remaining unrecognized compensation costs, nonvested awards other than options $ 68
Weighted-Average Service Years 1 year 3 months 18 days
Nonvested performance-based restricted share units  
Share-based Compensation Arrangement by Share-based Payment Award  
Total remaining unrecognized compensation costs, nonvested awards other than options $ 23
Weighted-Average Service Years 1 year 7 months 6 days