XML 485 R203.htm IDEA: XBRL DOCUMENT v3.20.1

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of transactions between related parties [line items]
Key management remuneration	$ 21.3	$ 17.0
Director's interest in issued share capital or voting control	1.00%
Executive Committee and Non-Executive Directors [Member]
Disclosure of transactions between related parties [line items]
Key management personnel's beneficial interest in issued and listed share capital	0.10%	0.10%	0.20%

X

- Definition

Percentage of key management personnel's beneficial interest in issued and listed share capital.

+ References

No definition available.

+ Details

Name:	gfi_PercentageOfBeneficialInterestInIssuedAndListedCapital
Namespace Prefix:	gfi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of interest in issued share capital of each director.

+ References

No definition available.

+ Details

Name:	gfi_PercentageOfInterestInIssuedShareCapitalOfEachDirector
Namespace Prefix:	gfi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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

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

X

- Definition

The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2019-01-01
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2019-en-r&anchor=para_17&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_KeyManagementPersonnelCompensation
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=gfi_ExecutiveCommitteeAndNonexecutiveDirectorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: