The amount of current trade receivables. [Refer: Trade receivables]

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Sales - Trade receivables - Segments - Tabular disclosure (Details) - EUR (€) € in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of operating segments [line items]
Net trade receivables	€ 5,320	€ 5,295	€ 5,175	€ 4,964
Telecom activities, operating segment [member]
Disclosure of operating segments [line items]
Net trade receivables	€ 5,320	€ 5,295	€ 5,175