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Long-Term Debt - Summary of Long-Term Debt (Details) - USD ($)	Dec. 31, 2025	Aug. 31, 2025	Dec. 31, 2024	Feb. 29, 2024	Feb. 16, 2023	Jul. 25, 2018
Debt Instrument [Line Items]
Long-term debt, gross	$ 10,632,410,000		$ 10,644,999,000
WML Convertible Bond Conversion Option Derivative	32,586,000		33,007,000
Less: Unamortized debt issuance costs and original issue discounts and premium, net	(118,184,000)		(136,272,000)
Long-term debt total	10,546,812,000		10,541,734,000
Less: Current portion of long-term debt	(9,410,000)		(41,250,000)
Total long-term debt, net of current portion	10,537,402,000		10,500,484,000
WM Cayman II | WM Cayman II Revolver, due 2025 | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	1,149,597,000		1,151,874,000
WML | WML 5 1/2% Senior Notes, due 2026 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 0		1,000,000,000
Debt instrument, interest rate	5.50%
WML | WML 5 1/2% Senior Notes, due 2027 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 750,000,000		750,000,000
Debt instrument, interest rate	5.50%
WML | WML 5 1/8% Senior Notes, due 2029 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,350,000,000		1,350,000,000
Debt instrument, interest rate	5.625%
WML | WML 5 5/8% Senior Notes, due 2028 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,000,000,000	$ 1,000,000,000.00	1,000,000,000
Debt instrument, interest rate	5.125%
WML | WML 6 3/4% Senior Notes, due 2034 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,000,000,000		0
Debt instrument, interest rate	6.75%
WML | WML 4 1/2% Convertible Bonds, due 2029 | Convertible Debt
Debt Instrument [Line Items]
Long-term debt, gross	$ 600,000,000		600,000,000
Less: Unamortized debt issuance costs and original issue discounts and premium, net	(80,800,000)
Long-term debt total	$ 519,200,000
Debt instrument, interest rate	4.50%
WML | Four and Seven Over Eight Percentage Wynn Macau Limited Senior Notes Due October One Two Thousand Twenty Four [Member] | Senior Notes
Debt Instrument [Line Items]
Debt instrument, interest rate	4.875%
WRF | WRF Term Loan, due 2027 | Secured Debt
Debt Instrument [Line Items]
Long-term debt, gross	$ 0		763,125,000
WRF | WRF Term Loan, due 2030 | Secured Debt
Debt Instrument [Line Items]
Long-term debt, gross	752,813,000		0
WRF | WRF 5 1/8% Senior Notes, due 2029 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 750,000,000		750,000,000
Debt instrument, interest rate	5.125%
WRF | WRF 7 1/8% Senior Notes, due 2031 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,000,000,000		1,000,000,000		$ 596,200,000
Long-term debt total				$ 409,500,000
Debt instrument, interest rate	7.125%
WRF | WRF 6 1/4% Senior Notes, due 2033 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 800,000,000		800,000,000
Debt instrument, interest rate	6.25%
WLV | WLV 5 1/4% Senior Notes, due 2027 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 880,000,000		880,000,000
Debt instrument, interest rate	5.25%
Retail Term Loan | Retail Term Loan, due 2027 | Term Loan
Debt Instrument [Line Items]
Long-term debt, gross	$ 600,000,000		$ 600,000,000			$ 615,000,000.0

X

- 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.

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