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Retirement Plans and Postretirement Benefit Plans - Additional Information (Details) - USD ($)
 1 Months Ended 12 Months Ended
Jan. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Employer expected contribution   $ 10,000,000    
Employer contributions   $ 10,000,000 $ 0  
Ultimate Health Care Cost Trend Rate   4.50%    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match   200.00%    
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay   5.00%    
Defined Contribution Plan, Cost   $ 21,400,000 19,600,000 $ 17,100,000
Subsequent Event [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Employer contributions $ 5,000,000      
Maximum [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Percentage of increase in annual medical inflation cost   5.00%    
Og and E [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined Contribution Plan, Cost   $ 21,400,000 16,000,000 13,900,000
Other Postretirement Benefits Plan [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Employer contributions   $ 6,300,000 6,800,000  
Health Care Cost Trend Rate Assumed for Next Fiscal Year   6.50%    
Fair Value of Plan Assets   $ 30,000,000 32,700,000 32,800,000
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Fair Value of Plan Assets   0 0  
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Fair Value of Plan Assets   13,600,000 16,800,000  
Other Postretirement Benefits Plan [Member] | Og and E [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Employer contributions   4,900,000 5,200,000  
Fair Value of Plan Assets   27,200,000 29,600,000 29,800,000
Pension Plan [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Employer contributions   10,000,000 0  
Fair Value of Plan Assets   246,900,000 243,700,000 293,000,000
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Fair Value of Plan Assets   0 0  
Pension Plan [Member] | Og and E [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Employer contributions   10,000,000 0  
Fair Value of Plan Assets   $ 211,600,000 $ 191,400,000 $ 238,900,000