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

No definition available.

Name:	us-gaap_LineOfCreditFacilityLineItems
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

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Period Type:	duration

Consolidated leverage ratio minimum numerator

No definition available.

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Debt Instrument, Covenant Terms, Leverage Ratio

No definition available.

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Debt Instrument, Final Payment Percent, Principal

No definition available.

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Debt Instrument, Periodic Payment Percent, Principal

No definition available.

Name:	wynn_DebtInstrumentPeriodicPaymentPercentPrincipal
Namespace Prefix:	wynn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Debt Prepayment Liability, Current

No definition available.

Name:	wynn_DebtPrepaymentLiabilityCurrent
Namespace Prefix:	wynn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Interest coverage ratio minimum numerator

No definition available.

Name:	wynn_InterestCoverageRatioMinimumNumerator
Namespace Prefix:	wynn_
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Period Type:	duration

Percentage of Excess Cash Flow That May Be Required To Be Repaid

No definition available.

Name:	wynn_PercentageOfAnnualExcessCashFlowsToBeRepaidUnderNewCreditFacility
Namespace Prefix:	wynn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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Name:	dei_LegalEntityAxis=wynn_WynnMacauMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	srt_RangeAxis=srt_MinimumMember
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Data Type:	na
Balance Type:
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Name:	srt_RangeAxis=srt_MaximumMember
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