Basis of Presentation (Unaudited) Contract Estimates (Details 2) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Change in Accounting Estimate [Line Items]
Revenue	$ 95	$ 160	$ 304	$ 362
Operating income	954	1,044	1,851	3,866
Net earnings	$ 946	$ 1,037	$ 1,901	$ 3,232
Diluted earnings per share	$ 6.06	$ 6.42	$ 12.16	$ 19.89
Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Operating income	$ 92	$ 154	$ 265	$ 344
Net earnings	$ 73	$ 122	$ 209	$ 272
Diluted earnings per share	$ 0.47	$ 0.76	$ 1.34	$ 1.67