XML 158 R151.htm IDEA: XBRL DOCUMENT v3.8.0.1

Environmental Trust Funds - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Environmental Trust Funds [Abstract]
Term deposit	$ 15.9	$ 11.3
Cash deposit	$ 39.6	$ 33.2

X

- Definition

Environmental trust fund.

+ References

No definition available.

+ Details

Name:	gfi_EnvironmentalTrustFundsAbstract
Namespace Prefix:	gfi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The portion of the funds intended to fund environmental rehabilitation obligations of the entity consisting of secured cash deposits.

+ References

No definition available.

+ Details

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

X

- Definition

The portion of the funds intended to fund environmental rehabilitation obligations of the entity consisting of term deposits.

+ References

No definition available.

+ Details

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