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v3.25.3

Financing arrangements - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Debt Instrument [Line Items] |  |  |  |
Repayments of debt | $ 1,500 | $ 2,200 | $ 5,000 | $ 3,600
Extinguishment of debt | 81 | 249 | 683 | 659
Gain on extinguishment of debt | $ 36 | 82 | $ 264 | 215
Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  |  | 1.225% |
4.563% notes due 2048 (4.563% 2048 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 4.563% |  | 4.563% |
Effective interest rate | 6.30% |  | 6.30% |
4.663% notes due 2051 (4.663% 2051 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 4.663% |  | 4.663% |
Effective interest rate | 5.60% |  | 5.60% |
2.77% notes due 2053 (2.77% 2053 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 2.77% |  | 2.77% |
Effective interest rate | 5.20% |  | 5.20% |
Various Long-Term Notes | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Repayments of debt | $ 119 | $ 331 | $ 1,000 | $ 875
2.00% notes due 2032 (2.00% 2032 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 2.00% |  | 2.00% |
3.15% notes due 2040 (3.15% 2040 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 3.15% | 3.15% | 3.15% | 3.15%
2.80% notes due 2041 (2.80% 2041 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 2.80% | 2.80% | 2.80% | 2.80%
3.375% notes due 2050 (3.375% 2050 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 3.375% | 3.375% | 3.375% | 3.375%
3.00% notes due 2052 (3.00% 2052 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 3.00% | 3.00% | 3.00% | 3.00%
4.20% notes due 2052 (4.20% 2052 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 4.20% | 4.20% | 4.20% | 4.20%
4.40% notes due 2062 (4.40% 2062 Notes) | Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, stated percentage | 4.40% | 4.40% | 4.40% | 4.40%

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