XML 56 R45.htm IDEA: XBRL DOCUMENT
v3.19.1

8. Restricted cash (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Restricted Cash Tables Abstract |
Restricted cash |
| December 31, 2018 | December 31, 2017
Current |  |
Agreement with the São Paulo municipal government (i) | 19,977 | 12,055
Brazilian Federal Savings Bank – escrow deposits (ii) | 5,880 | 1,209
Other | 6,043 | 5,558
| 31,900 | 18,822
| (i) | Refers to the amount deducted from the 7.5% of Municipal revenue transferred to the Municipal Fund, corresponding to eventual amounts unpaid by direct management bodies, foundations and government agencies, as established in the agreement entered into with the municipal government of São Paulo; and
| (ii) | Refers to savings account for receiving escrow deposits regarding lawsuits with final and unappealable decisions in favor of the Company, which are blocked as per contractual clause.

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

X
- References No definition available. + Details
Name: | SBS_SummaryOfRestrictedCashTableTextBlock
Namespace Prefix: | SBS_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration