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Employee Benefits - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]        
401(k) plan contributions by employer   $ 21,000,000 $ 7,000,000  
Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Discount rate   470.00% 490.00%  
Expected rate of return on plan assets   6.30% 6.00% 6.30%
Compensation increase percentage   2.50%    
Amortization of actuarial gain (loss)   $ 7,000,000 $ 2,000,000  
Amortization of prior service cost     0  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)   (2,000,000) (10,000,000) $ (5,000,000)
Actuarial gain   2,000,000 $ (38,000,000)  
Defined Benefit Plan, Expected Amortization, Next Fiscal Year   3,000,000    
Defined Benefit Plan, Expected Future Benefit Payment, Year One   $ 8,000,000    
Pension Plan | Minimum        
Defined Benefit Plan Disclosure [Line Items]        
Long-term inflation rate   5.00%    
Pension Plan | Minimum | Equity securities        
Defined Benefit Plan Disclosure [Line Items]        
Expected rate of return on plan assets   6.00%    
Pension Plan | Minimum | Fixed income securities        
Defined Benefit Plan Disclosure [Line Items]        
Expected rate of return on plan assets   3.00%    
Pension Plan | Maximum        
Defined Benefit Plan Disclosure [Line Items]        
Long-term inflation rate   7.00%    
Pension Plan | Maximum | Equity securities        
Defined Benefit Plan Disclosure [Line Items]        
Expected rate of return on plan assets   8.00%    
Pension Plan | Maximum | Fixed income securities        
Defined Benefit Plan Disclosure [Line Items]        
Expected rate of return on plan assets   5.00%    
Health & Welfare Plan        
Defined Benefit Plan Disclosure [Line Items]        
Discount rate   4.60% 480.00%  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)   $ 1,000,000 $ 1,000,000  
Health & Welfare Plan | Forecast        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ 1,000,000      
Post-Retirement Health and Welfare Benefits        
Defined Benefit Plan Disclosure [Line Items]        
Amortization of actuarial gain (loss)   0  
Amortization of prior service cost   0  
Actuarial gain   1,000,000 $ (2,000,000)  
Defined Benefit Plan, Expected Future Benefit Payment, Year One   $ 1,000,000