Unrecognized contractual commitments (excluding Orange Bank) - Financing commitments - Pledged or mortgaged assets (Details) - EUR (€) € in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Unrecognized contractual commitments [abstract]
Assets held under finance leases	€ 636	€ 574	€ 528
Non-current pledged, mortgaged or receivership assets	366	453	107
Collateralized current assets	2	21	19
Total	€ 1,004	€ 1,048	€ 654

The amount of current non-cash collateral assets (such as debt or equity instruments) provided to a transferee, for which the transferee has the right by contract or custom to sell or repledge the collateral.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 9
-IssueDate 2019-01-01
-Paragraph 3.2.23
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2019-en-r&anchor=para_3.2.23_a&doctype=Standard
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IAS
-Number 39
-IssueDate 2019-01-01
-Paragraph 37
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=39&code=ifrs-tx-2017-en-b&anchor=para_37_a&doctype=Standard&book=b
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_CurrentNoncashAssetsPledgedAsCollateralForWhichTransfereeHasRightByContractOrCustomToSellOrRepledgeCollateral
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of non-current non-cash collateral assets (such as debt or equity instruments) provided to a transferee, for which the transferee has the right by contract or custom to sell or repledge the collateral.

+ References

+ Details

Name:	ifrs-full_NoncurrentNoncashAssetsPledgedAsCollateralForWhichTransfereeHasRightByContractOrCustomToSellOrRepledgeCollateral
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Assets pledged as collateral for liabilities or contingent liabilities

+ References

No definition available.

+ Details

Name:	oran_AssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
Namespace Prefix:	oran_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee as per IAS 17.

+ References

No definition available.

+ Details

Name:	oran_RecognizedFinanceLeaseAsAssetsIas17
Namespace Prefix:	oran_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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