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Pension and Other Postretirement Employee Benefit Plans (Benefit Payments that Reflect Expected Future Service) (Details)
$ in Millions
Dec. 31, 2024
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
2025 $ 239
2026 249
2027 245
2028 242
2029 238
2030 - 2034 1,048
Pension Benefits | U.S. Pension Benefits  
Defined Benefit Plan Disclosure [Line Items]  
2025 170
2026 171
2027 170
2028 167
2029 164
2030 - 2034 658
Pension Benefits | Foreign Plan  
Defined Benefit Plan Disclosure [Line Items]  
2025 56
2026 66
2027 64
2028 65
2029 65
2030 - 2034 354
Postretirement Benefits  
Defined Benefit Plan Disclosure [Line Items]  
2025 13
2026 12
2027 11
2028 10
2029 9
2030 - 2034 $ 36