Equity - Additional information - currency translation reserve (Details) € in Millions	Jun. 30, 2022 EUR (€)
Disclosure of equity [Line Items]
Net increase (decrease) in currency translation reserve	€ 1,549
TRY [member]
Disclosure of equity [Line Items]
Net increase (decrease) in currency translation reserve	834
USD [member]
Disclosure of equity [Line Items]
Net increase (decrease) in currency translation reserve	597
RUB [member]
Disclosure of equity [Line Items]
Net increase (decrease) in currency translation reserve	181
PLN [member]
Disclosure of equity [Line Items]
Net increase (decrease) in currency translation reserve	€ (55)

A component of equity representing the accumulated change in the value of foreign currency basis spreads of financial instruments when excluding them from the designation of these financial instruments as hedging instruments.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 78
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 9
-IssueDate 2021-01-01
-Paragraph 6.5.16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2021-en-r&anchor=para_6.5.16&doctype=Standard
-URIDate 2021-03-24

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