Name:	nem_GainOnSettlementOfForeignCurrencyContracts
Namespace Prefix:	nem_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The notional amount of foreign currency contracts the Company has settled or discontinued in order to reduce derivative exposure.

No definition available.

Name:	nem_NotionalAmountOfForeignCurrencyContractsToBeSettled
Namespace Prefix:	nem_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

Provisional pricing average price subject to final pricing.

No definition available.

Name:	nem_ProvisionalPricingAveragePriceSubjectToFinalPricing
Namespace Prefix:	nem_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

Provisional pricing mark to market gain loss rate.

No definition available.

Name:	nem_ProvisionalPricingMarkToMarketGainLossRate
Namespace Prefix:	nem_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

Provisional pricing quantity sales.

No definition available.

Name:	nem_ProvisionalPricingQuantitySales
Namespace Prefix:	nem_
Data Type:	num:massItemType
Balance Type:	na
Period Type:	instant

Recorded average provisional price.

No definition available.

Name:	nem_RecordedAverageProvisionalPrice
Namespace Prefix:	nem_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

High end period remaining until maturity for the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_DerivativeHigherRemainingMaturityRange1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_DerivativesFairValueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959

Name:	us-gaap_EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

Name:	us-gaap_ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ProductOrServiceAxis=nem_CopperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: