Property, Plant and Equipment - Schedule of Property, Plant and Equipment Assets Pledged to Secure Bank Loans and Borrowings Granted to Group (Detail) - RUB (₽) ₽ in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about property, plant and equipment [abstract]
Net book value	₽ 117,370	₽ 121,926

The amount of property, plant and equipment pledged as security for liabilities. [Refer: Property, plant and equipment]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2018-01-01
-Paragraph 74
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_74_a&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_PropertyPlantAndEquipmentPledgedAsSecurity
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant