XML 96 R85.htm IDEA: XBRL DOCUMENT
v3.19.1

9. Trade receivables (Details 1) - BRL (R$) R$ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
SummaryOfTradeReceivablesLineItems [Line Items] |  |
Trade receivables | R$ 2,052,416 | R$ 1,888,505
Wholesale customers - Municipal governments |  |
SummaryOfTradeReceivablesLineItems [Line Items] |  |
Trade receivables | 1,994,905 | 2,568,205
Wholesale customers - Municipal governments | Guarulhos |  |
SummaryOfTradeReceivablesLineItems [Line Items] |  |
Trade receivables | 0 | 760,598
Wholesale customers - Municipal governments | Maua |  |
SummaryOfTradeReceivablesLineItems [Line Items] |  |
Trade receivables | 601,910 | 530,830
Wholesale customers - Municipal governments | Mogi das Cruzes |  |
SummaryOfTradeReceivablesLineItems [Line Items] |  |
Trade receivables | 3,056 | 2,670
Wholesale customers - Municipal governments | Santo Andre |  |
SummaryOfTradeReceivablesLineItems [Line Items] |  |
Trade receivables | 1,164,399 | 1,048,832
Wholesale customers - Municipal governments | Sao Caetano do Sul |  |
SummaryOfTradeReceivablesLineItems [Line Items] |  |
Trade receivables | 2,869 | 2,604
Wholesale customers - Municipal governments | Diadema |  |
SummaryOfTradeReceivablesLineItems [Line Items] |  |
Trade receivables | R$ 222,671 | R$ 222,671

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

X
- Definition The amount due from customers for goods and services sold. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_b&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_TradeReceivables
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | dei_EntitySectorIndustryClassificationsSectorAxis=SBS_WholesaleMunicipalGovernmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | SBS_TradeReceivablesAxis=SBS_GuarulhosMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | SBS_TradeReceivablesAxis=SBS_MauaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | SBS_TradeReceivablesAxis=SBS_MogiDasCruzesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | SBS_TradeReceivablesAxis=SBS_SantoAndreMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | SBS_TradeReceivablesAxis=SBS_SaoCaetanoDoSulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | SBS_TradeReceivablesAxis=SBS_DiademaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |