XML 124 R113.htm IDEA: XBRL DOCUMENT
v3.19.1

17. Borrowings and financing (Details 6) R$ in Thousands | Dec. 31, 2018 BRL (R$) | [1]
--- | --- | ---
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | R$ 3,609,000
Brazilian Federal Savings Bank |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | 1,908,000
Brazilian Development Bank - BNDES BAIXADA SANTISTA |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | 1,455,000
Japan International Cooperation Agency - JICA |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | 208,000
Other |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | R$ 38,000
[1] | Brazilian Central Bank's exchange rate as of December 30, 2018 (Yen1.00 = R$0.03527).

X
- References No definition available. + Details
Name: | SBS_BorrowingsAndFinancingCreditLimited
Namespace Prefix: | SBS_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | SBS_SummaryOfBorrowingsAndFinancingLineItems
Namespace Prefix: | SBS_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=SBS_BrazilianFederalSavingsBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=SBS_BrazilianDevelopmentBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=SBS_JapanInternationalCooperationAgencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=SBS_OtherBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |