| Statement of comprehensive income [abstract] | |||
| Profit (loss) | |||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | |||
| Other comprehensive income, before tax, exchange differences on translation | |||
| Other comprehensive income, before tax, actuarial gains (losses) on defined benefit plans | |||
| Other comprehensive income, before tax, gains (losses) on revaluation | |||
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | |||
| Other comprehensive income, before tax, cash flow hedges | |||
| Share of other comprehensive income of associates and joint ventures accounted for using equity method, before tax | |||
| Other comprehensive income, before tax | |||
| Income tax relating to components of other comprehensive income | |||
| Income tax relating to share of other comprehensive income of associates and joint ventures accounted for using equity method | |||
| Other comprehensive income | |||
| Comprehensive income | |||