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Capital Stock - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Feb. 29, 2024 | Feb. 28, 2023 | Oct. 31, 2021 | Mar. 31, 2024 | Mar. 31, 2023
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Cash dividends, per share (in dollars per share) | $ 0.21 | $ 0.20 | $ 0.15 | $ 0.21 | $ 0.57
Share repurchases and retirements (in shares) |  |  |  | 6 |
Share repurchases and retirements |  |  |  | $ 157 |
Stock repurchase program |  |  |  | 1,400 |
Share repurchases |  |  |  | $ 157 | $ 271
Previous Share Repurchase Program |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Stock repurchased during period (in shares) |  |  |  |  | 11
Share repurchases |  |  |  |  | $ 271

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