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Included in Profit Before Royalties and Taxation - Schedule of Amounts Included in Profit Before Royalties and Taxation (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of information about amounts included in profit before royalties and taxation [abstract]
Operating lease charges	$ (2.4)	$ (2.8)	$ (2.7)
Regulatory legal fees	0.0	0.0	(0.1)
Profit on buy-back of notes	0.0	17.7	0.0
Social contributions and sponsorships	(19.6)	(19.3)	(12.2)
Global compliance costs	0.0	(0.1)	(3.6)
Rehabilitation income - continuing operations	13.5	9.7	14.6
Rehabilitation income - discontinued operations	$ 0.0	$ 0.2	$ 0.5

X

- Definition

Disclosure of information about amounts included in profit before royalties and taxation.

+ References

No definition available.

+ Details

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Namespace Prefix:	gfi_
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Balance Type:	na
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X

- Definition

The amount of expenses relating to global compliance costs.

+ References

No definition available.

+ Details

Name:	gfi_GlobalComplianceCosts
Namespace Prefix:	gfi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Profit loss on buyback of notes.

+ References

No definition available.

+ Details

Name:	gfi_ProfitLossOnBuybackOfNotes
Namespace Prefix:	gfi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of expenses relating to regulatory legal fees.

+ References

No definition available.

+ Details

Name:	gfi_RegulatoryLegalFees
Namespace Prefix:	gfi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Rehabilitation income and/or expenses attributable to continuing operations.

+ References

No definition available.

+ Details

Name:	gfi_RehabilitationIncomeExpenseContinuingOperations
Namespace Prefix:	gfi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Rehabilitation income and/or expenses attributable to discontinuing operations.

+ References

No definition available.

+ Details

Name:	gfi_RehabilitationIncomeExpenseDiscontinuedOperations
Namespace Prefix:	gfi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of expenses relating to social contributions and sponsorships.

+ References

No definition available.

+ Details

Name:	gfi_SocialContributionsAndSponsorships
Namespace Prefix:	gfi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The portion of operating lease payments that the lessee is or can be required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with any amounts guaranteed by the lessee or by a party related to the lessee recognised as an expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2019-01-01
-Name IAS
-Number 17
-IssueDate 2017-01-01
-Paragraph 35
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2017-03-02&anchor=para_35_c&doctype=Standard&book=B
-URIDate 2017-03-09

+ Details

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