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Property (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Total property | $ 72,401 | $ 65,455 |
Less: accumulated depreciation | (31,286) | (27,823) |
Total property, net | 41,115 | 37,632 |
Depreciation, Amortization and Impairment [Abstract] |  |  |
Depreciation and amortization expense | 12,047 | 12,676 | $ 14,060
Property, Plant and Equipment |  |  |
Capitalized Interest and Software [Abstract] |  |  |
Capitalized software | 1,400 | 1,300 |
Depreciation, Amortization and Impairment [Abstract] |  |  |
Depreciation and amortization expense | 5,829 | 5,354 | 6,541
Impairment charges | 0 | 86 | 7
Capitalized software amortization expense | 515 | 457 | $ 452
Land |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Total property | 1,301 | 1,339 |
Buildings and Improvements |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Total property | $ 10,542 | 9,671 |
Buildings and Improvements | Minimum |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Estimated Useful Life in Years | 5 years |  |
Buildings and Improvements | Maximum |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Estimated Useful Life in Years | 40 years |  |
Machinery and Equipment |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Total property | $ 31,444 | 30,013 |
Machinery and Equipment | Minimum |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Estimated Useful Life in Years | 3 years |  |
Machinery and Equipment | Maximum |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Estimated Useful Life in Years | 27 years |  |
Special Tools |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Total property | $ 23,719 | 20,851 |
Special Tools | Minimum |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Estimated Useful Life in Years | 1 year |  |
Special Tools | Maximum |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Estimated Useful Life in Years | 13 years |  |
Construction in Progress |  |  |
Property, Plant and Equipment, Net, by Type [Abstract] |  |  |
Total property | $ 5,395 | $ 3,581 |

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