| Intangible assets and goodwill | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Intangible assets and goodwill at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Intangible assets and goodwill at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Total intangible assets and goodwill | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Ativos intangíveis e goodwill | pt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| A quantia dos ativos intangíveis e goodwill detidos pela entidade. [Consultar: Goodwill; Ativos intangíveis distintos do goodwill] | pt | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Total dos ativos intangíveis e goodwill | pt | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Ativos intangíveis e goodwill no início do período | pt | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Ativos intangíveis e goodwill no final do período | pt | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |