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Basis of Presentation and Summary of Accounting Principles (Schedule of change in accounting estimates) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Change in Accounting Estimate [Line Items] |  |  |
Contract with Customer, Performance Obligation Satisfied in Previous Period | $ 152 | $ 296 | $ (407)
Operating profit (loss) | 5,414 | 4,958 | (1,889)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent | $ 5,216 | $ 3,897 | $ (3,109)
Income (loss) from continuing operations attributable to common shareowners | $ 3.51 | $ 2.58 | $ (2.29)
Contracts Accounted for under Percentage of Completion |  |  |
Change in Accounting Estimate [Line Items] |  |  |
Operating profit (loss) | $ (37) | $ 110 | $ (643)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent | $ (29) | $ 87 | $ (508)
Income (loss) from continuing operations attributable to common shareowners | $ (0.02) | $ 0.06 | $ (0.37)

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