Changes in the Group structure - Major business combinations, Lapa and Iara concessions (Details) - Transfer of rights in the Lapa and Iara Concessions in Brazil $ in Millions	1 Months Ended
Jan. 31, 2018 USD ($) bbl / d
Lapa and Iara concessions
Major business combinations
Acquisition cost	$ 1,950
Purchase price allocation
Intangible assets	1,054
Tangible assets	1,509
Other assets and liabilities	(126)
Net debt	(487)
Fair value of consideration transferred	$ 1,950
Lapa field
Major business combinations
Percentage of rights acquired	35.00%
FPSO capacity (in barrels per day) \| bbl / d	100,000
Iara area
Major business combinations
Percentage of rights acquired	22.50%

The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2018-01-01
-Paragraph B64
-Subparagraph f
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B64_f&doctype=Appendix&seq=2
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount recognised as of the acquisition date for borrowings assumed in a business combination. [Refer: Borrowings; Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 3
-IssueDate 2018-01-01
-Paragraph B64
-Subparagraph i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B64_i&doctype=Appendix&seq=2
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_BorrowingsRecognisedAsOfAcquisitionDate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfBusinessCombinationsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount recognised as of the acquisition date for net identifiable assets acquired or liabilities assumed in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2018-01-01
-Paragraph B64
-Subparagraph i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B64_i&doctype=Appendix&seq=2
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2018-01-01
-Paragraph IE72
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_IE72&doctype=Illustrative%20Examples
-URIDate 2018-03-16

+ Details

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

- Definition

The amount recognised as of the acquisition date for identifiable intangible assets acquired in a business combination. [Refer: Intangible assets other than goodwill; Business combinations [member]]

+ References

+ Details

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

- Definition

The amount recognised as of the acquisition date for plant, property and equipment acquired in a business combination. [Refer: Property, plant and equipment; Business combinations [member]]

+ References

+ Details

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

- Definition

The floating production storage and offloading capacity of the joint operation.

+ References

No definition available.

+ Details

Name:	tot_JointOperationFloatingProductionStorageAndOffloadingCapacity
Namespace Prefix:	tot_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount recognised as of the acquisition date for net other assets and liabilities acquired in a business combination.

+ References

No definition available.

+ Details

Name:	tot_OtherAssetsAndLiabilitiesRecognisedAsOfAcquisitionDate
Namespace Prefix:	tot_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of concession rights acquired in a business combination.

+ References

No definition available.

+ Details

Name:	tot_PercentageOfConcessionRightsAcquired
Namespace Prefix:	tot_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_JointOperationsAxis=tot_LapaAndIaraConcessionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BusinessCombinationsAxis=tot_RightsInLapaAndIaraConcessionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_JointOperationsAxis=tot_LapaFieldMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_JointOperationsAxis=tot_IaraAreaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: