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Other Financial Data - Stockholders' Equity, Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 12, 2025 | Dec. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Nov. 14, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  | $ 18,000 |  |  |
Share repurchase authority utilized during period |  |  | 15,800 |  |  |
Share repurchase program, available for repurchases |  |  | 2,200 |  |  |
Excise tax |  |  | $ 3 |  |  |
Dividends declared per share (USD per share) |  | $ 0.98 | $ 4.03 | $ 3.62 | $ 3.25 |
Dividends payable (USD per share) |  |  |  |  |  | $ 1.09
Payment of dividends |  |  | $ 654 | $ 589 | $ 530 |
Subsequent Event |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Payment for additional dividends | $ 182 |  |  |  |  |

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