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Financing arrangements - Debt Repayments (Details) € in Millions, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 EUR (€) | Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  | $ 0 | $ 4,150 |  | $ 6,450
Make-whole payments recognized in interest expense |  | 1,406 | 1,197 |  | 1,262
Extinguishment of Debt, Amount | $ 297 |  |  |  |
Gain (Loss) on Extinguishment of Debt | $ 78 |  |  |  |
Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  | $ 0 | 4,200 |  | 6,500
Make-whole payments recognized in interest expense |  |  | 24 |  | 96
Notes | 4.50% notes due 2020 (4.50% 2020 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  |  |  | $ 300
Interest rate, stated percentage |  |  |  |  | 4.50%
Notes | 2.125% notes due 2020 (2.125% 2020 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  |  |  | $ 750
Interest rate, stated percentage |  |  |  |  | 2.125%
Notes | Floating Rate Notes Due 2020 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  |  |  | $ 300
Notes | 2.20% notes due 2020 (2.20% 2020 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  |  |  | $ 700
Interest rate, stated percentage |  |  |  |  | 2.20%
Notes | 3.45% notes due 2020 (3.45% 2020 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  |  |  | $ 900
Interest rate, stated percentage |  |  |  |  | 3.45%
Notes | 4.10% notes due 2021 (4.10% 2021 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  |  |  | $ 1,000
Interest rate, stated percentage |  |  |  |  | 4.10%
Notes | 1.85% notes due 2021 (1.85% 2021 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  |  |  | $ 750
Interest rate, stated percentage |  |  |  |  | 1.85%
Notes | 3.875% notes due 2021 (3.875% 2021 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  |  |  | $ 1,750
Interest rate, stated percentage |  |  |  |  | 3.875%
Notes | 1.25% notes due 2022 (1.25% 2022 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  | $ 1,400 | € 1,250 |
Interest rate, stated percentage |  |  | 1.25% | 1.25% |
Notes | 2.70% notes due 2022 (2.70% 2022 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  | $ 500 |  |
Interest rate, stated percentage |  |  | 2.70% | 2.70% |
Notes | 2.65% notes due 2022 (2.65% 2022 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  | $ 1,500 |  |
Interest rate, stated percentage |  |  | 2.65% | 2.65% |
Notes | 3.625% Notes Due 2022 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of debt |  |  | $ 750 |  |
Interest rate, stated percentage |  |  | 3.625% | 3.625% | 3.625%
Notes | 2.45% notes due 2030 (2.45% 2030 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate, stated percentage | 2.45% | 2.45% | 2.45% | 2.45% | 2.45%
Notes | 2.30% notes due 2031 (2.30% 2031 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate, stated percentage | 2.30% | 2.30% | 2.30% | 2.30% | 2.30%
Notes | 2.80% notes due 2041 (2.80% 2041 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate, stated percentage | 2.80% | 2.80% |  |  |
Notes | 3.00% notes due 2052 (3.00% 2052 Notes) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate, stated percentage | 3.00% | 3.00% | 3.00% | 3.00% |

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