Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: 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(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

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

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

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

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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=120391452&loc=d3e13212-122682

+ Details

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

- Definition

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

+ References

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=121586364&loc=d3e3291-108585

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

Long-Term Debt - Summary of Long-Term Debt - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Repayments of credit facilities		$ 2,477,690	$ 1,540,609
Long-term debt, gross	$ 11,814,143	11,814,143		$ 13,154,049
Wynn Macau \| Wynn Macau Credit Facilities \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Repayments of credit facilities	1,260,000
Wynn Macau \| Senior Term Loan Facility, due 2022 \| Senior Secured Term Loan
Debt Instrument [Line Items]
Long-term debt, gross	0	0		1,268,106
Wynn Macau \| Senior Revolving Credit Facility, due 2022 \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	0	0		407,443
WRF \| WRF Revolver, due 2024 \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	0	0		716,000
Available borrowing capacity	834,200	834,200
Outstanding letters of credit	15,800	15,800
Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC (The Borrowers) \| Retail Term Loan, due 2025 \| Term Loan
Debt Instrument [Line Items]
Long-term debt, gross	615,000	615,000		615,000
WM Cayman Holdings Limited II \| WM Cayman II Revolver, due 2025 \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,089,143	$ 1,089,143		$ 0
Weighted average interest rate (percent)	2.69%	2.69%
Available borrowing capacity	$ 413,100	$ 413,100
LIBOR \| WRF \| WRF Credit Facilities
Debt Instrument [Line Items]
Interest in addition to variable rate		1.75%
Weighted average interest rate (percent)	1.84%	1.84%
LIBOR \| Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC (The Borrowers) \| Retail Term Loan, due 2025 \| Term Loan
Debt Instrument [Line Items]
Interest in addition to variable rate		1.70%
Interest rate during period		2.70%
LIBOR \| WM Cayman Holdings Limited II \| WM Cayman II Revolver, due 2025 \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Interest in addition to variable rate		2.625%
Long-term debt, gross	$ 226,500	$ 226,500
HIBOR \| WM Cayman Holdings Limited II \| WM Cayman II Revolver, due 2025 \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Interest in addition to variable rate		2.625%
Long-term debt, gross	$ 862,600	$ 862,600
HIBOR or LIBOR \| WM Cayman Holdings Limited II \| WM Cayman II Revolver, due 2025 \| Senior Secured Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Interest in addition to variable rate		1.875%
HIBOR or LIBOR \| WM Cayman Holdings Limited II \| WM Cayman II Revolver, due 2025 \| Senior Secured Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Interest in addition to variable rate		2.875%