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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

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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

No definition available.

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- Definition

Dividends received on equity and other investments during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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Noncontrolling Interests - Additional Information (Detail)											3 Months Ended												6 Months Ended	12 Months Ended
	Oct. 05, 2018 USD ($)	Oct. 05, 2018 $ / shares	Apr. 25, 2018 USD ($)	Apr. 25, 2018 $ / shares	Sep. 15, 2017 USD ($)	Sep. 15, 2017 $ / shares	Jun. 20, 2017 USD ($)	Jun. 20, 2017 $ / shares	Apr. 27, 2016 USD ($)	Apr. 27, 2016 $ / shares	Dec. 31, 2018 $ / shares	Sep. 30, 2018 $ / shares	Jun. 30, 2018 $ / shares	Mar. 31, 2018 $ / shares	Dec. 31, 2017 $ / shares	Sep. 30, 2017 $ / shares	Jun. 30, 2017 $ / shares	Mar. 31, 2017 USD ($)	Dec. 31, 2016 $ / shares	Sep. 30, 2016 $ / shares	Jun. 30, 2016 $ / shares	Mar. 31, 2016 $ / shares	Jun. 30, 2018 $ / shares	Dec. 31, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Noncontrolling Interest
Dividend paid (HK per share) \| $ / shares											$ 0.75	$ 0.75	$ 0.75	$ 0.50	$ 0.5	$ 0.5	$ 0.5		$ 0.5	$ 0.5	$ 0.5	$ 0.5		$ 2.75
Cash dividends declared (usd per share)																		$ 0.50
Decrease from distributions to noncontrolling interest																								$ 305,372,000	$ 11,436,000	$ 33,000
Wynn Macau, Limited
Noncontrolling Interest
Noncontrolling Interest, Ownership Percentage by Parent											72.00%													72.00%
Dividend paid (HK per share) \| $ / shares										$ 0.60
Cash dividends declared (usd per share)									$ 401,900,000
Company's share of dividend									290,100,000
Decrease from distributions to noncontrolling interest									$ 111,800,000
Retail Joint Venture
Noncontrolling Interest
Decrease from distributions to noncontrolling interest																								$ 305,400,000
Subsidiaries [Member] \| Wynn Macau, Limited
Noncontrolling Interest
Dividend paid (HK per share) \| $ / shares		$ 0.75		$ 0.75		$ 0.21		$ 0.42
Cash dividends declared (usd per share)			$ 497,100,000		$ 139,400,000		$ 279,900,000																	$ 496,600,000
Wynn Macau, Limited
Noncontrolling Interest
Company's share of dividend	$ 358,300,000		358,800,000		100,600,000		202,000,000
Decrease from distributions to noncontrolling interest	$ 138,200,000		$ 138,300,000		$ 38,800,000		$ 77,900,000
Interim Dividend \| Subsidiaries [Member] \| Wynn Macau, Limited
Noncontrolling Interest
Dividends declared per common share (usd per share) \| $ / shares																							$ 0.32
Special Dividend \| Subsidiaries [Member] \| Wynn Macau, Limited
Noncontrolling Interest
Dividends declared per common share (usd per share) \| $ / shares		$ 0.43