| Group [member] | Company [member] | ||
| Retained earnings [abstract] | |||
| Total retained earnings of Company and its subsidiaries [abstract] | |||
| Realised | |||
| Unrealised | |||
| Retained earnings of associates [abstract] | |||
| Realised | |||
| Unrealised | |||
| Retained earnings of joint ventures [abstract] | |||
| Realised | |||
| Unrealised | |||
| Total retained earnings of the company, its subsidiaries, associates and joint ventures | |||
| Retained earnings others | |||
| Less: Consolidation adjustments | |||
| Total retained earnings | |||