Unrecognized contractual commitments (excluding Orange Bank) - Public initiative networks commitments (Details) € in Millions	12 Months Ended
Dec. 31, 2019 EUR (€)
Unrecognized contractual commitments [abstract]
Public-private service concession commitments, new contract amount	€ 1,739
Public-private service concession commitments, intangible assets	2,488
Public-private service concession commitments, financial debt securities	€ 2,043

Obligations relating to public service delegation and public-private partnership contracts for financial debt securities.

No definition available.

Name:	oran_ContractualObligationPublicPrivateServiceConcessionsFinancialDebtSecurities
Namespace Prefix:	oran_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant