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
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net earnings available to common shareholders - basic	$ 596	$ 987
Net earnings available to common shareholders - diluted	$ 596	$ 987
Common shares:
Average common shares outstanding - basic	629	645
Dilutive effect of potential common shares issuable	3	2
Average common shares outstanding - diluted	632	647
Net earnings per share available to common shareholders:
Basic	$ 0.95	$ 1.53
Diluted	$ 0.94	$ 1.53