Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 22,978	$ 21,695	$ 25,190	$ 24,072	$ 25,939	$ 24,683	$ 27,284	$ 23,650	$ 93,935	$ 101,556	$ 85,249
Gross Profit	1,740	1,810	1,883	2,080	1,762	1,811	2,100	1,897	7,513	7,570	5,987
Net Income (Loss) Attributable to Parent	$ 565	$ 821	$ 927	$ 1,170	$ 1,019	$ 1,031	$ 1,236	$ 1,054	$ 3,483	$ 4,340	$ 2,709
Basic earnings per common share (dollars per share)	$ 1.07	$ 1.52	$ 1.70	$ 2.13	$ 1.84	$ 1.84	$ 2.18	$ 1.86	$ 6.44	$ 7.72	$ 4.80
Diluted earnings per common share (dollars per share)	$ 1.06	$ 1.52	$ 1.70	$ 2.12	$ 1.84	$ 1.83	$ 2.18	$ 1.86	$ 6.43	$ 7.71	$ 4.79