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Long-term Incentive Compensation (Narrative) (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended 66 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jun. 30, 2023
Stock Based Compensation 2022 Plan              
Schedule of Share-based Compensation [Line Items]              
Service period 3 years            
Unexercised stock options              
Schedule of Share-based Compensation [Line Items]              
Vesting period 3 years            
Expiration period 10 years            
Restricted stock              
Schedule of Share-based Compensation [Line Items]              
Vesting period 3 years            
Equity-classified awards, unrecognized compensation cost $ 1           $ 1
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition 8 months 12 days            
Performance units              
Schedule of Share-based Compensation [Line Items]              
Vesting period 3 years 3 years 3 years       3 years
Equity-classified awards, unrecognized compensation cost $ 8           $ 8
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition 2 years 3 months 18 days            
Equity-Classified Restricted Stock Units              
Schedule of Share-based Compensation [Line Items]              
Equity-classified awards, unrecognized compensation cost $ 9           $ 9
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition 1 year 8 months 12 days            
Liability-Classified Restricted Stock Units              
Schedule of Share-based Compensation [Line Items]              
Vesting period         3 years   4 years
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition 8 months 12 days            
Liability classified awards, unrecognized compensation costs $ 4           $ 4
Liability-Classified Performance Units              
Schedule of Share-based Compensation [Line Items]              
Vesting period             3 years
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition 2 years 2 months 12 days            
Liability classified awards, unrecognized compensation costs $ 6           $ 6
Liability-classified performance units, vesting period 3 years     3 years 3 years 3 years  
Performance cash awards              
Schedule of Share-based Compensation [Line Items]              
Vesting period 3 years     4 years 4 years 4 years  
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition 2 years 4 months 24 days            
Liability classified awards, unrecognized compensation costs $ 45           $ 45