Shareholders' equity - Earnings per share - Net income attributable to the owners of the parent company - Diluted - Continuing and Discontinued Operations (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Shareholders' equity [abstract]
Net income attributable to the owners of the parent company - diluted	€ 2,749	€ 1,661	€ 1,609
Net income of continuing operations - Diluted earnings per share	€ 2,749	€ 1,661	1,580
Net income of discontinued operations - Diluted earnings per share			€ 29

The profit (loss) attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [Refer: Profit (loss)]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
-IssueDate 2019-01-01
-Paragraph 70
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_70_a&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The profit (loss) from continuing operations attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [Refer: Profit (loss) from continuing operations]

+ References

+ Details

Name:	ifrs-full_ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The profit (loss) from discontinued operations attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [Refer: Profit (loss) from discontinued operations]

+ References

+ Details

Name:	ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Shareholders' equity [abstract]

+ References

No definition available.

+ Details

Name:	oran_ShareholdersEquityAbstract
Namespace Prefix:	oran_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration