Net Earnings Per Share (Net Earnings (Loss) Per Share Computations from Continuing Operations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net earnings:
Net earnings	$ 1,932	$ 256	$ 2,921	$ 469
Attributable to participating securities	(17)	(3)	(33)	(5)
Basic and diluted earnings	$ 1,915	$ 253	$ 2,888	$ 464
Common shares:
Common shares outstanding - total	658	677	661	666
Attributable to participating securities	(6)	(6)	(7)	(6)
Common shares outstanding - basic	652	671	654	660
Dilutive effect of potential common shares issuable	2	2	2	2
Common shares outstanding - diluted	654	673	656	662
Net Earnings Per Share Basic And Diluted
Basic	$ 2.94	$ 0.38	$ 4.42	$ 0.70
Diluted	$ 2.93	$ 0.38	$ 4.40	$ 0.70