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Risk Management Activities - Schedule of Combined Maximum Credit Risk Exposure (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Trade and other receivable [member]
Disclosure of credit risk exposure [line items]
VAT, prepayments and diesel rebates	$ 73.7	$ 135.4

X

- Definition

Value added tax, prepayments and diesel rebates receivables.

+ References

No definition available.

+ Details

Name:	gfi_ValueAddedTaxPrepaymentsAndDieselRebatesReceivables
Namespace Prefix:	gfi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

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

X

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_TradeReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: