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Pension and Postretirement Benefit Plans - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Apr. 01, 2024
Benefit Plan Information    
Discontinued operation, pension plan benefit obligation   $ 2,700
Discontinued operation, postretirement plan benefit obligation   $ 2,400
U.S. Pension Plans    
Benefit Plan Information    
Company contributions $ 20  
Postretirement benefits    
Benefit Plan Information    
Company contributions $ 3