XML 116 R109.htm IDEA: XBRL DOCUMENT v3.8.0.1

Share-Based Payments - Summary of Vesting Profile (Detail)	12 Months Ended
	Dec. 31, 2017
Absolute TSR [Member]
Disclosure of vesting profile [line items]
Threshold	0.00%
Target	100.00%
Stretch and cap	200.00%
Relative TSR [Member]
Disclosure of vesting profile [line items]
Threshold	0.00%
Target	100.00%
Stretch and cap	200.00%
Free Cash Flow Margin [Member]
Disclosure of vesting profile [line items]
Threshold	0.00%
Target	100.00%
Stretch and cap	200.00%

X

- Definition

Disclosure of vesting profile.

+ References

No definition available.

+ Details

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

X

- Definition

Stretch and cap percentage of vesting profile.

+ References

No definition available.

+ Details

Name:	gfi_StretchAndCapPercentageOfVestingProfile
Namespace Prefix:	gfi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Target of percentage of vesting profile.

+ References

No definition available.

+ Details

Name:	gfi_TargetOfPercentageOfVestingProfile
Namespace Prefix:	gfi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Threshold of percentage of vesting profile.

+ References

No definition available.

+ Details

Name:	gfi_ThresholdOfPercentageOfVestingProfile
Namespace Prefix:	gfi_
Data Type:	num:percentItemType
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:

X

- Details

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