Related-party transactions - Related-party transactions (Detail) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related-party transactions [Abstract]
Revenue from sale of goods, related party transactions	€ 116	€ 204	€ 158
Purchases of goods, related party transactions	41	57	53
Amounts receivable, related party transactions, at the end of the period	40	37	32
Amounts payable, related party transactions, at the end of the period	€ 2	€ 1	€ 2

The amounts payable resulting from related party transactions. [Refer: Related parties [member]]

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- Definition

The amounts receivable resulting from related party transactions. [Refer: Related parties [member]]

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- Definition

The amount of goods purchased by the entity in related party transactions. [Refer: Related parties [member]]

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- Definition

The amount of revenue arising from the sale of goods in related party transactions. [Refer: Revenue; Related parties [member]]

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