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Discontinued Operation - Summary of Assets and Liabilities of Discontinued Operation (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017 AUD ($)
Disclosure Of Noncurrent Assets Held For Sale And Discontinued Operations [Abstract]
Total consideration from disposal	$ 16.4
Consideration per agreement	$ 18.5

X

- Definition

Consideration paid (received) disposal of discontinued operation

+ References

No definition available.

+ Details

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X

- Definition

Consideration for sale of discontinued operation per agreement.

+ References

No definition available.

+ Details

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

X

- Definition

Disclosure Of Noncurrent Assets Held For Sale And Discontinued Operations [Abstract]

+ References

No definition available.

+ Details

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Namespace Prefix:	gfi_
Data Type:	xbrli:stringItemType
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