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Financing arrangements - Debt Repayments and Redemptions (Details) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 EUR (€) | Mar. 31, 2023 USD ($) | Dec. 31, 2022 CHF (SFr)
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of debt | $ 1,454,000,000 | $ 0 | $ 4,150,000,000 |  |  |
Interest expense, net | 2,875,000,000 | 1,406,000,000 | 1,197,000,000 |  |  |
Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount |  | 7,000,000,000 | 5,000,000,000 |  | $ 24,000,000,000 |
Repayments of debt |  | $ 0 | 4,200,000,000 |  |  |
Interest expense, net |  |  | $ 24,000,000 |  |  |
2.25% notes due 2023 (2.25% 2023 Notes) | Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount | 750,000,000 |  |  |  |  |
Interest rate, stated percentage |  | 2.25% |  |  |  | 2.25%
0.41% CHF700 million bonds due 2023 (0.41% 2023 Swiss franc Bonds) | Cross-currency swap contract gains (losses) | Cash flow hedge |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Notional amount | $ 704,000,000 |  |  |  |  |
0.41% CHF700 million bonds due 2023 (0.41% 2023 Swiss franc Bonds) | Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount | SFr |  |  |  |  |  | SFr 700,000,000
Interest rate, stated percentage | 0.41% | 0.41% |  |  | 0.41% | 0.41%
1.25% notes due 2022 (1.25% 2022 Notes) | Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate, stated percentage |  |  | 1.25% |  |  |
Repayments of debt |  |  | $ 1,400,000,000 | € 1,250 |  |
2.70% notes due 2022 (2.70% 2022 Notes) | Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate, stated percentage |  |  | 2.70% |  |  |
Repayments of debt |  |  | $ 500,000,000 |  |  |
2.65% notes due 2022 (2.65% 2022 Notes) | Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate, stated percentage |  |  | 2.65% |  |  |
Repayments of debt |  |  | $ 1,500,000,000 |  |  |
3.625% Notes Due 2022 | Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate, stated percentage |  |  | 3.625% |  |  |
Repayments of debt |  |  | $ 750,000,000 |  |  |

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