XML 231 R179.htm IDEA: XBRL DOCUMENT v3.19.1
Post-Employment Benefits - Summary of Maturity Profile of Defined Benefit Liabilities (Detail)
R$ in Millions
 12 Months Ended
Dec. 31, 2018
BRL (R$)
Disclosure of net defined benefit liability (asset) [line items]  
2019 R$ 1,186
2020 1,229
2021 1,282
2022 1,334
2023 1,385
2024 to 2028 R$ 7,673
Pension plan - FIU [member]  
Disclosure of net defined benefit liability (asset) [line items]  
Duration 10 years 10 months 17 days
2019 R$ 799
2020 824
2021 859
2022 894
2023 929
2024 to 2028 R$ 5,184
Pension plan - FUNBEP [member]  
Disclosure of net defined benefit liability (asset) [line items]  
Duration 10 years 1 month 2 days
2019 R$ 370
2020 387
2021 404
2022 420
2023 435
2024 to 2028 R$ 2,362
Other post employment benefits [member]  
Disclosure of net defined benefit liability (asset) [line items]  
Duration 12 years 7 days
2019 R$ 17
2020 18
2021 19
2022 20
2023 21
2024 to 2028 R$ 127