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Share-Based Payments - Summary Movement of Share Options Under the Gold Fields Limited 2012 Share Plan (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017 shares
Disclosure of movements in share options [Abstract]
Options vested	0

X

- Definition

Disclosure of movements in share options.

+ References

No definition available.

+ Details

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

X

- Definition

Number of share options vested in share-based payment arrangement.

+ References

No definition available.

+ Details

Name:	gfi_NumberOfShareOptionsVestedInSharebasedPaymentArrangement
Namespace Prefix:	gfi_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration