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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	3 Months Ended				9 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2024	Sep. 30, 2023
Equity, Class of Treasury Stock [Line Items]
Cash dividends on common stock (in dollars per share)	$ 0.21	$ 0.20	$ 0.20	$ 0.15
Share repurchases and retirements (in shares)					15
Share repurchases and retirements					$ 404
Stock repurchase program					$ 1,200
Previous Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Share repurchases and retirements (in shares)						15
Share repurchases and retirements						$ 388