Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Currently payable
Federal	$ 376	$ 606	$ 756
State	78	76	104
International	679	621	597
Deferred
Federal	(3,074)	(612)	(219)
State	(504)	(76)	(25)
International	(246)	(2)	72
Total	$ (2,691)	$ 612	$ 1,285

Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction.

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