| Revenue (before special items and remeasurements) | 27,354a | 30,656a |
| Revenue (special items and remeasurements) | -64a | -4a |
| Revenue (total) | 27,290a | 30,652a |
| Operating costs (before special items and remeasurements) | -22,342a | -24,100a |
| Operating costs (special items and remeasurements) | -5,176a | -2,648a |
| Operating costs (total) | -27,518a | -26,748a |
| Operating (loss)/profit (before special items and remeasurements) | 5,012a | 6,556a |
| Operating (loss)/profit (special items and remeasurements) | -5,240a | -2,652a |
| Operating (loss)/profit (total) | -228a | 3,904a |
| Non-operating special items (before special items and remeasurements) | | |
| Non-operating special items (special items and remeasurements) | -79a | -100a |
| Non-operating special items (total) | -79a | -100a |
| Net income from associates and joint ventures (before special items and remeasurements) | 134a | 378a |
| Net income from associates and joint ventures (special items and remeasurements) | | |
| Net income from associates and joint ventures (total) | 134a | 378a |
| (Loss)/profit before net finance costs and tax (before special items and remeasurements) | 5,146a | 6,934a |
| (Loss)/profit before net finance costs and tax (special items and remeasurements) | -5,319a | -2,752a |
| (Loss)/profit before net finance costs and tax (total) | -173a | 4,182a |
| Investment income (before special items and remeasurements) | 426a | 427a |
| Investment income (special items and remeasurements) | | |
| Investment income (total) | 426a | 427a |
| Interest expense (before special items and remeasurements) | -1,172a | -990a |
| Interest expense (special items and remeasurements) | | |
| Interest expense (total) | -1,172a | -990a |
| Other net financing gains/(losses) (before special items and remeasurements) | 36a | 7a |
| Other net financing gains/(losses) (special items and remeasurements) | -41a | -31a |
| Other net financing gains/(losses) (total) | -5a | -24a |
| Net finance costs (before special items and remeasurements) | -710a | -556a |
| Net finance costs (special items and remeasurements) | -41a | -31a |
| Net finance costs (total) | -751a | -587a |
| (Loss)/profit before tax (before special items and remeasurements) | 4,436a | 6,378a |
| (Loss)/profit before tax (special items and remeasurements) | -5,360a | -2,783a |
| (Loss)/profit before tax (total) | -924a | 3,595a |
| Income tax (expense)/credit (before special items and remeasurements) | -1,762a | -2,337a |
| Income tax (expense)/credit (special items and remeasurements) | -102a | -86a |
| Income tax (expense)/credit (total) | -1,864a | -2,251a |
| (Loss)/profit for the financial year (before special items and remeasurements) | 2,674a | 4,041a |
| (Loss)/profit for the financial year (special items and remeasurements) | -5,462a | -2,697a |
| (Loss)/profit for the financial year (total) | -2,788a | 1,344a |
| Attributable to | — | — |
| Non-controlling interests (before special items and remeasurements) | 737a | 1,109a |
| Non-controlling interests (special items and remeasurements) | -457a | -48a |
| Non-controlling interests (total) | 280a | 1,061a |
| Equity shareholders of the Company (before special items and remeasurements) | 1,937a | 2,932a |
| Equity shareholders of the Company (special items and remeasurements) | -5,005a | -2,649a |
| Equity shareholders of the Company (total) | -3,068a | 283a |