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Long-Term Incentive Compensation Plans:Stock-Based Compensation (Details)
shares in Millions
12 Months Ended
Dec. 31, 2022
stock_awards
shares
Dec. 31, 2021
stock_awards
Dec. 31, 2020
stock_awards
Compensation Related Costs [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 3.7    
Number of types of stock-based awards granted (in types) | stock_awards 2 2 2
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 2.2