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Shareholders' equity Share Repurchases (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Jul. 01, 2025 | Jul. 01, 2023
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Share Repurchase Authorization, Expired | $ 628 |  |  | $ 628 |  |  |  |
July 2023 Stock Repurchase Plan |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  |  | $ 5,000
Number of shares repurchased | 2,339,727 |  | 2,254,236 | 3,685,509 |  | 3,474,357 |  |
Cost of shares repurchased | $ 676 |  | $ 570 | $ 1,061 |  | $ 886 |  |
Repurchase authorization remaining at end of period (1) | $ 0 | [1] | $ 2,808 | $ 0 | [1] | $ 2,808 |  |
July 2025 Stock Repurchase Plan |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  | $ 5,000 |
[1] | As of June 30, 2025, $628 million expired under the July 2023 $5.0 billion share repurchase authorization.

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