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Common Equity - Common Stock Dividends (Details) - $ / shares
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 16, 2025
Jan. 16, 2025
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dividends Paid and Payable                  
Dividends per share (in dollars per share)             $ 3.34 $ 3.12 $ 2.91
OQ12024DividendsMember                  
Dividends Paid and Payable                  
Dividends per share (in dollars per share)           $ 0.835      
OQ22024DividendsMember                  
Dividends Paid and Payable                  
Dividends per share (in dollars per share)         $ 0.835        
OQ32024DividendsMember                  
Dividends Paid and Payable                  
Dividends per share (in dollars per share)       $ 0.835          
O2024Q4DividendsMember [Member]                  
Dividends Paid and Payable                  
Dividends per share (in dollars per share)     $ 0.835            
Subsequent event                  
Dividends Paid and Payable                  
Dividends Payable, Amount Per Share $ 3.57 $ 3.57              
Subsequent event | OQ12025Dividends                  
Dividends Paid and Payable                  
Dividends per share (in dollars per share)   $ 0.8925              
Subsequent event | Minimum                  
Dividends Paid and Payable                  
Target dividend payout ratio (as a percent) 65.00%                
Subsequent event | Maximum                  
Dividends Paid and Payable                  
Target dividend payout ratio (as a percent) 70.00%