XML 352 R110.htm IDEA: XBRL DOCUMENT v3.20.1

Share-Based Payments - Summary of Share Based Payment Performance Condition (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019
Absolute Total Shareholder Return ("TSR") [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Compounded annual growth rate index trading days	60 trading days
Relative TSR [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Compounded annual growth rate index trading days	60 trading days

X

- Definition

Compounded annual growth rate index trading days.

+ References

No definition available.

+ Details

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

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	gfi_PerformanceConditionAxis=gfi_AbsoluteTsrMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	gfi_PerformanceConditionAxis=gfi_RelativeTSRMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: