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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