XML 113 R106.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Share-Based Payments - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Disclosure of terms and conditions of share-based payment arrangement [abstract] |  |
Cost of performance shares granted | $ 0 |
Percentage of performance criterion set by company | 85.00% |
Performance shares up to may be increased | 200.00% |
Holding period of restricted shares | Five years |
Maximum number of matching shares | 403,027 | 169,158
Maximum number of matching shares vesting period | Five years |

X
- Definition Holding period of restricted shares. + References No definition available. + Details
Name: | gfi_HoldingPeriodOfRestrictedShares
Namespace Prefix: | gfi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum number of matching shares at vest. + References No definition available. + Details
Name: | gfi_MaximumNumberOfMatchingSharesAtVest
Namespace Prefix: | gfi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum number of matching shares at vesting period. + References No definition available. + Details
Name: | gfi_MaximumNumberOfMatchingSharesAtVestingPeriod
Namespace Prefix: | gfi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of performance criterion set by the Company. + References No definition available. + Details
Name: | gfi_PercentageOfPerformanceCriterionSet
Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Performance shares up to may be increased. + References No definition available. + Details
Name: | gfi_PerformanceSharesUpToMayBeIncreased
Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average exercise price of share options granted in a share-based payment arrangement. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2017-01-01 -Paragraph 45 -Subparagraph b -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_45_b_ii&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration