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Pension, Postretirement and Savings Plans - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]      
Total expense related to defined contribution plans $ 287 $ 253 $ 204
Other Postretirement Benefits Plan      
Defined Benefit Plan Disclosure [Line Items]      
Other comprehensive income (loss), defined benefit plan, after reclassification adjustment, before tax 10 8  
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Other comprehensive income (loss), defined benefit plan, after reclassification adjustment, before tax $ (14) $ (35)