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Share-Based Payments - Summary Movement of Share Options Under the Gold Fields Limited 2012 Share Plan (Detail) - Performance Shares [Member] - Gold Fields Limited 2012 Share Plan Amended [Member] - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of movements in share options [Line Items]
Outstanding at beginning of the year	8,138,472	0
Granted	11,744,152	8,196,037
Exercised and released	(34,827)	0
Forfeited	(1,568,667)	(57,565)
Outstanding at end of the year	18,279,130	8,138,472

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Disclosure of the movement of share options under the Gold Fields Limited 2005 and 2012 share plan.

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The number of share options outstanding in a share-based payment arrangement.

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