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Cash from operations (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Cash flows from operating activities |  |  |  |
Income/(loss) before taxation | $ 188.4 | $ (199.3) | $ 325.3 | $ (1,846.6)
Adjustments: |  |  |  |
Depreciation of property, plant and equipment | 77.7 | 78.0 | 234.1 | 231.0
Amortization of intangible assets | 27.3 | 13.3 | 49.3 | 35.0
Amortization of prepaid site rent | 0.8 | 2.4 | 2.1 | 7.5
Net impairment of property, plant and equipment, intangible assets excluding goodwill and related prepaid land rent | 1.8 | 1.2 | 5.4 | 10.1
Impairment of assets held for sale |  | 2.9 |  | 2.9
Impairment of goodwill |  |  |  | 87.9
Net (reversal of impairment)/impairment of withholding tax receivables | (24.9) | 21.9 | (37.8) | 32.8
Impairment of inventory | (0.2) | (0.4) | 0.2 | (0.4)
Net loss/(gain) on disposal of property, plant and equipment and right-of-use assets | 0.6 | (1.3) | (0.4) | (3.6)
Share-based payment expense | 6.0 | 1.8 | 20.0 | 9.9
Net loss allowance/(reversal of loss allowance) on trade receivables | 11.8 | (4.3) | 13.6 | (2.1)
Finance income | (130.2) | (25.7) | (186.3) | (49.7)
Finance costs | 101.7 | 350.8 | 330.3 | 2,163.2
Insurance claim income | (0.1) |  | (0.4) | (0.1)
Operating income before working capital changes | 260.7 | 241.3 | 755.4 | 677.8
Changes in working capital |  |  |  |
Increase in inventory | (0.4) | (0.4) | (10.5) | (5.8)
Decrease/(increase) in trade and other receivables | 6.0 | (67.0) | (25.1) | (254.2)
(Decrease)/increase in trade and other payables | (6.7) | 8.5 | 10.9 | 9.2
Net movement in working capital | (1.1) | (58.9) | (24.7) | (250.8)
Cash from operations | $ 259.6 | $ 182.4 | $ 730.7 | $ 427.0

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