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Benefit Plans - Defined Contribution Plan (Details) - United States - USD ($) $ in Millions		12 Months Ended
	Jul. 01, 2019	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Contribution Plan Disclosure
Company's matching contribution percentage		50.00%
Matching contribution expenses		$ 10.2	$ 8.7	$ 8.0
Maximum
Defined Contribution Plan Disclosure
Employer matching contributions, percentage of eligible compensation		6.00%
Wynn Macau
Defined Contribution Plan Disclosure
Matching contribution expenses		$ 16.3	$ 17.0	$ 17.2
Wynn Macau | Wynn Macau Plan
Defined Contribution Plan Disclosure
Employee contribution percentage		5.00%
Wynn Macau | CPF System
Defined Contribution Plan Disclosure
Employer matching contributions, percentage of eligible compensation	5.00%
Minimum employee contribution percentage	5.00%
Annual vesting percentage	10.00%
Vesting period	10 years

X

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480794/715-70-50-1

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480794/715-70-50-1

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+ References

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- Definition

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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