Commitments, contingencies and operating risks - Credit related commitments (Details) - RUB (₽) ₽ in Millions	Dec. 31, 2018	Dec. 31, 2017
Commitments, contingencies and operating risks
Unused limits on instalment card loans	₽ 30,062	₽ 8,603

The amount of contractual undiscounted cash flows for gross commitments to receive a loan.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph B11D
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_B11D_e&doctype=Appendix&seq=2
-URIDate 2018-03-16

Name:	ifrs-full_GrossLoanCommitments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant