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Assets Held for Sale - Assets Held for Sale (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Assets Held For Sale [line items]
Total assets held for sale	$ 0.0	$ 40.0
APP [Member]
Assets Held For Sale [line items]
Total assets held for sale	$ 0.0	$ 40.0

X

- Definition

Assets held for sale.

+ References

No definition available.

+ Details

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

X

- Definition

Line items for assets held for sale table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=gfi_AppMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: