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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Capital Stock - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended			3 Months Ended				6 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Oct. 31, 2021	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Equity, Class of Treasury Stock [Line Items]
Cash dividends on common stock (in dollars per share)	$ 0.21	$ 0.20	$ 0.15	$ 0.21	$ 0.21	$ 0.20	$ 0.57
Share repurchases and retirements (in shares)								11
Share repurchases and retirements								$ 296
Stock repurchase program				$ 1,300				$ 1,300
Previous Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Share repurchases and retirements (in shares)									13
Share repurchases and retirements									$ 328