Sales - Trade receivables - Long-term trade receivables - Additional information (Details)	12 Months Ended
Dec. 31, 2019
Revenue [abstract]
Long-term trade receivables, headset sales, installments, term, bottom of range	12 months

Current trade receivables, long-term, headset sales, installments, term, bottom of range

No definition available.

Name:	oran_CurrentTradeReceivablesLongTermHeadsetSalesInstallmentsTermBottomOfRange
Namespace Prefix:	oran_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration