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Pension and Other Postretirement Employee Benefit Plans (Benefit Payments that Reflect Expected Future Service) (Details)
$ in Millions
Dec. 31, 2022
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
2023 $ 256
2024 259
2025 254
2026 257
2027 254
2028 - 2032 1,112
Pension benefit plans | U.S. Pension Benefits  
Defined Benefit Plan Disclosure [Line Items]  
2023 186
2024 184
2025 183
2026 182
2027 180
2028 - 2032 718
Pension benefit plans | Foreign Plan  
Defined Benefit Plan Disclosure [Line Items]  
2023 56
2024 62
2025 59
2026 64
2027 64
2028 - 2032 352
Other postretirement benefits  
Defined Benefit Plan Disclosure [Line Items]  
2023 14
2024 13
2025 12
2026 11
2027 10
2028 - 2032 $ 42