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Segment information - Summary of adjusted EBITDA (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Segment Reporting [Abstract] |  |  |  |
Adjusted EBITDA | $ 2,454 | $ 2,190 | $ 5,154 | $ 4,590
Depreciation, depletion and amortization | (467) | (402) | (1,288) | (1,187)
Interest income | 33 | 62 | 112 | 138
Interest expense | (164) | (131) | (452) | (285)
Gain on divestitures and unrealized gains on investments | 59 | 0 | 242 | 0
Pension income excluding current service cost component | 1 | 1 | 3 | 3
Other interest, net | 2 | 0 | 1 | 0
Substantial acquisition-related costs | (23) | 0 | (45) | 0
Income from operations before income tax expense and income from equity method investments | $ 1,895 | $ 1,720 | $ 3,727 | $ 3,259

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