Property, plant and equipment - Property, plant and equipment (Detail) - EUR (€) € in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, plant and equipment [Line Items]
Property, plant and equipment	€ 2,638	€ 2,699
Owned [member]
Property, plant and equipment [Line Items]
Property, plant and equipment	1,718	1,641	€ 1,663
Right-of-use assets [member]
Property, plant and equipment [Line Items]
Property, plant and equipment	€ 919	€ 1,058	€ 1,020

The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2021-01-01
-Paragraph 73
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 54
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_a&doctype=Standard
-URIDate 2021-03-24

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