XML 112 R85.htm IDEA: XBRL DOCUMENT v3.21.1
Income taxes - Uncertain tax provisions (Details)
R$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2020
BRL (R$)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
BRL (R$)
Dec. 31, 2019
USD ($)
Nov. 30, 2020
BRL (R$)
Nov. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Income taxes                      
Uncertain tax positions         R$ 2,259 $ 435          
Total subsidiary assessments of deferred tax R$ 3,614 $ 695 R$ 1,431 $ 355              
Deferred tax liabilities   1,770 R$ 1,882       $ 1,882 $ 1,532 $ 362 $ 362 $ 362
Foreign subsidiary tax amount involved R$ 6,401 $ 1,232