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Other Expenses - Summary of Other Expenses (Parenthetical) (Detail) (Collateralized, USD $)	Dec. 31, 2013
$1 billion syndicated revolving credit facility
Components Of Other Expense [Line Items]
Long-term revolving credit facility	$ 1,000,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember
$500 million syndicated revolving credit facility
Components Of Other Expense [Line Items]
Long-term revolving credit facility	$ 500,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = gfi_SyndicatedRevolvingLoanFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember

X

- Details

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Namespace Prefix:	gfi_
Data Type:	xbrli:stringItemType
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X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant