Earnings per Share (Basic and Diluted Earnings Per Share) (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net earnings	$ 2,166	$ 224	$ 6,070	$ 3,074
Less: Distributed and undistributed earnings attributable to share-based awards	(5)	(3)	(12)	(9)
Less: Distributed and undistributed earnings attributable to share-based awards	(5)	(3)	(12)	(9)
Earnings for basic EPS	2,161	221	6,058	3,065
Earnings for diluted EPS	$ 2,161	$ 221	$ 6,058	$ 3,065
Weighted-average shares for basic EPS (in shares)	1,773,000	1,799,000	1,780,000	1,808,000
Weighted-average shares for diluted EPS (in shares)	1,773,000	1,799,000	1,780,000	1,808,000