| Group [member] | Company [member] | ||
| Trade and other current receivables [abstract] | |||
| Current trade receivables [abstract] | |||
| Trade receivables due from contract customers | |||
| Trade receivables due from holding company | |||
| Trade receivables due from subsidiaries | |||
| Trade receivables due from associates | |||
| Trade receivables due from joint ventures | |||
| Trade receivables due from other related parties | |||
| Other current trade receivables | |||
| Total current trade receivables | |||
| Other current receivables [abstract] | |||
| Current other receivables due from related parties [abstract] | |||
| Other receivables due from holding company | |||
| Other receivables from subsidiaries | |||
| Other receivables from associates | |||
| Other receivables due from joint ventures | |||
| Other receivables due from other related parties | |||
| Total current other receivables due from related parties | |||
| Current prepayments and current accrued income [abstract] | |||
| Prepayments | |||
| Accrued income | |||
| Total current prepayments and current accrued income | |||
| Current non-trade receivables [abstract] | |||
| Interest receivables | |||
| Deposits | |||
| Dividend receivables | |||
| Lease and hire purchase receivables | |||
| Other current non-trade receivables | |||
| Total current non-trade receivables | |||
| Total other current receivables | |||
| Total trade and other current receivables | |||