Unrecognized contractual commitments (excluding Orange Bank) - Guarantees granted to third parties (Details) € in Millions	Dec. 31, 2019 EUR (€)
Unrecognized contractual commitments [abstract]
Guarantees granted to third parties in the ordinary course of business	€ 1,131
Performance guarantees granted to third parties to secure networks and remote access	€ 425

Obligations for guarantees granted to third parties in the ordinary course of business to secure networks and remote access.

No definition available.

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