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Income Tax - Schedule of Major Components of Income Tax Expense (Detail) - RUB (₽)
₽ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Major components of tax expense (income) [abstract]      
Current income tax charge ₽ (2,315) ₽ (3,397) ₽ (555)
Adjustments in respect of income tax, including income tax penalties and changes in uncertain income tax position (2,962) (3,154) 766
Relating to origination and reversal of temporary differences 2,596 3,401 (5,104)
Income tax expense reported in the consolidated statement of profit (loss) and other comprehensive income ₽ (2,681) ₽ (3,150) ₽ (4,893)