Fixed assets - Internal costs capitalized as property, plant and equipment (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other intangible assets and property, plant and equipment [abstract]
Labor expenses	€ 459	€ 460	€ 466
Total	€ 459	€ 460	€ 466

Internal costs, labour expenses capitalized as property, plant and equipment.

No definition available.

Name:	oran_InternalCostsLabourExpensesCapitalizedAsPropertyPlantAndEquipment
Namespace Prefix:	oran_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration