Basis of Presentation and Summary of Accounting Principles (Schedule of change in accounting estimates) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	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)