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Employee Benefits Schedule of Defined Benefit Plan Disclosures (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Fair value of plan assets:      
Actuarial loss (gain) $ 3    
Defined Benefit Plan, Plan Assets, Benefits Paid 0 $ (1)  
Defined Benefit Plan, Plan Assets, Payment for Settlement 0 (11)  
Classification in consolidated balance sheet:      
Noncurrent asset (34) (35)  
Pension Plans, Defined Benefit [Member]      
Benefit obligation:      
As of January 1 612 690 $ 695
Fair value of plan assets:      
Service cost 10 10 17
Interest cost on benefit obligation 33 37 28
Actuarial loss (gain) 40 37  
Benefit payments (78) (86)  
Defined Benefit Plan, Plan Assets, Administration Expense (3) (3)  
As of January 1 484 530 547
Defined Benefit Plan, Funded (Unfunded) Status of Plan (128) (160)  
Net actuarial loss (gain) included in comprehensive income (20) 8  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment 0 0 0
Other Postretirement Benefits Cost (Reversal of Cost) (1) (1)  
Defined Benefit Plan, Amortization of Gain (Loss) 0 0 $ (15)
Total Amounts included in comprehensive income (20) 9  
Defined Benefit Plan, Accumulated Benefit Obligation 574 645  
Actual return on plan assets 19 72  
Company contributions 16 0  
Classification in consolidated balance sheet:      
Noncurrent asset 0 0  
Current liability 0 0  
Noncurrent liability (128) (160)  
Amounts included in AOCL:      
Net actuarial loss 85 105  
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax $ 84 $ 104  
Assumptions used:      
Discount rate used to calculate benefit obligation 5.13% 5.42%  
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase 4.08% 4.19% 4.21%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 6.88% 6.75%  
Defined Benefit Plan, Benefit Obligation, Changes Between Actual and Expected Return on Plan Assets, Gains $ 29    
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) 0 $ 1 $ 2
Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair value of plan assets:      
As of January 1 0 0  
Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 1 [Member]      
Fair value of plan assets:      
As of January 1 13 14  
Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 2 [Member]      
Fair value of plan assets:      
As of January 1 0 0  
Other Postretirement Benefit Plans [Member]      
Benefit obligation:      
As of January 1 37 35 43
Fair value of plan assets:      
Service cost 1 1 1
Interest cost on benefit obligation 2 2 2
Actuarial loss (gain) 1 3  
Benefit payments (3) (2)  
Defined Benefit Plan, Plan Assets, Administration Expense 0 0  
As of January 1 25 23 21
Defined Benefit Plan, Funded (Unfunded) Status of Plan (12) (12)  
Net actuarial loss (gain) included in comprehensive income 0 2  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment 0 1 11
Other Postretirement Benefits Cost (Reversal of Cost) 0 0  
Defined Benefit Plan, Amortization of Gain (Loss) 0 1 $ 0
Total Amounts included in comprehensive income 0 4  
Actual return on plan assets 2 2  
Company contributions 3 13  
Classification in consolidated balance sheet:      
Noncurrent asset 0 0  
Current liability (1) 0  
Noncurrent liability (11) (12)  
Amounts included in AOCL:      
Net actuarial loss (3) (3)  
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax $ (3) $ (3)  
Assumptions used:      
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase 4.02% 4.06% 4.04%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 4.73% 4.77%  
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) $ 0 $ 0 $ 0
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits 1    
Other Postretirement Benefit Plans [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair value of plan assets:      
As of January 1 0 0  
Other Postretirement Benefit Plans [Member] | Fair Value, Inputs, Level 1 [Member]      
Fair value of plan assets:      
As of January 1 4 7  
Other Postretirement Benefit Plans [Member] | Fair Value, Inputs, Level 2 [Member]      
Fair value of plan assets:      
As of January 1 6 6  
Non Qualified Benefit Plans [Member]      
Benefit obligation:      
As of January 1 16 18 18
Fair value of plan assets:      
Service cost 0 0 0
Interest cost on benefit obligation 0 1 1
Actuarial loss (gain) 0 2  
Benefit payments (2) (3)  
Defined Benefit Plan, Plan Assets, Administration Expense 0 0  
As of January 1 16 17 19
Defined Benefit Plan, Funded (Unfunded) Status of Plan 0 (1)  
Net actuarial loss (gain) included in comprehensive income 0 2  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment 0 0 0
Other Postretirement Benefits Cost (Reversal of Cost) 0 0  
Defined Benefit Plan, Amortization of Gain (Loss) (1) (1) $ (1)
Total Amounts included in comprehensive income (1) 1  
Defined Benefit Plan, Accumulated Benefit Obligation 16 17  
Actual return on plan assets (1) (2)  
Company contributions 2 3  
Classification in consolidated balance sheet:      
Noncurrent asset (16) (17)  
Current liability (2) (2)  
Noncurrent liability (14) (16)  
Amounts included in AOCL:      
Net actuarial loss 6 7  
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax $ 6 $ 7  
Assumptions used:      
Discount rate used to calculate benefit obligation 5.13% 5.42%  
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase 3.98% 4.01% 5.10%
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) $ 0 $ 0 $ 0