Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents

Cash, cash equivalents and restricted cash consisted of the following (in thousands):

	December 31, 2018		December 31, 2017
Cash and cash equivalents:
Cash (1)	$	1,455,744	$	2,354,244
Cash equivalents (2)	759,257		450,230
Total cash and cash equivalents	2,215,001		2,804,474
Restricted cash (3)	4,322		2,160
Total cash, cash equivalents and restricted cash	$	2,219,323	$	2,806,634

(1) Cash consists of cash on hand and bank deposits.

(2) Cash equivalents consist of bank time deposits and money market funds.

(3) Restricted cash consists of cash collateral associated with an obligation and cash held in a trust in accordance with WML's share award plan.

Schedule of Restricted Cash and Cash Equivalents

Cash, cash equivalents and restricted cash consisted of the following (in thousands):

	December 31, 2018		December 31, 2017
Cash and cash equivalents:
Cash (1)	$	1,455,744	$	2,354,244
Cash equivalents (2)	759,257		450,230
Total cash and cash equivalents	2,215,001		2,804,474
Restricted cash (3)	4,322		2,160
Total cash, cash equivalents and restricted cash	$	2,219,323	$	2,806,634

(1) Cash consists of cash on hand and bank deposits.

(2) Cash equivalents consist of bank time deposits and money market funds.

(3) Restricted cash consists of cash collateral associated with an obligation and cash held in a trust in accordance with WML's share award plan.

Schedule of Receivables, net

Receivables, net consisted of the following (in thousands):

	December 31,
	2018			2017
Casino	$	229,594		$	173,664
Hotel	22,086			22,487
Other	57,658			58,577
	309,338			254,728
Less: allowance for doubtful accounts	(32,694		)	(30,600		)
	$	276,644		$	224,128

Schedule of Estimated Useful Lives of Assets

Purchases of property and equipment are stated at cost, and when placed into service, are depreciated over the estimated useful lives of the assets using the straight-line method as follows:

	Estimated Useful Life in Years
Buildings and improvements	10 - 45
Land improvements	10 - 45
Furniture, fixtures and equipment	3 - 20
Leasehold interest in land	25
Airplanes	20

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table presents the changes by component, net of tax and noncontrolling interests, in accumulated other comprehensive loss of the Company (in thousands):

	Foreign currency translation			Unrealized loss on investment securities			Redemption Note			Accumulated other comprehensive loss
January 1, 2018	$	(553	)	$	(1,292	)	$	—		$	(1,845	)
Cumulative credit risk adjustment (1)	—			—			(9,211		)	(9,211		)
Change in net unrealized gain (loss)	(1,397		)	(1,510		)	7,690			4,783
Amounts reclassified to net income (2)	—			2,802			1,521			4,323
Other comprehensive income (loss)	(1,397		)	1,292			9,211			9,106
December 31, 2018	$	(1,950	)	$	—		$	—		$	(1,950	)

(1) On January 1, 2018, the Company adopted Accounting Standards Update ("ASU") No. 2016-01, Financial Instruments. The adjustment to the beginning balance represents the cumulative effect of the change in instrument-specific credit risk on the Redemption Note. See "Recently Adopted Accounting Standards—Financial Instruments" below for additional information.

(2) The amounts reclassified to net income include $1.8 million for other-than-temporary impairment losses and $1.0 million in realized losses, both related to investment securities, and a $1.5 million realized gain related to the repayment of the Redemption Note.

Schedule of Assets and Liabilities Carried at Fair Value

The following table presents assets and liabilities carried at fair value (in thousands):

			Fair Value Measurements Using:
	December 31, 2018		Quoted Market Prices in Active Markets (Level 1)		Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	759,257	$	—	$	759,257	$	—
Restricted cash	$	4,322	$	2,015	$	2,307	$	—
Liabilities:
Interest rate collar	$	619	$	—	$	619	$	—
			Fair Value Measurements Using:
	December 31, 2017		Quoted Market Prices in Active Markets (Level 1)		Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	450,230	$	11,200	$	439,030	$	—
Available-for-sale securities	$	327,455	$	—	$	327,455	$	—
Restricted cash	$	2,160	$	—	$	2,160	$	—
Liabilities:
Redemption Note	$	1,879,058	$	—	$	1,879,058	$	—

Schedule of Shares used in Calculation of Earnings Per Share

The weighted average number of common and common equivalent shares used in the calculation of basic and diluted EPS consisted of the following (in thousands, except per share amounts):

	Years Ended December 31,
	2018		2017		2016
Numerator:
Net income attributable to Wynn Resorts, Limited	$	572,430	$	747,181	$	241,975
Denominator:
Weighted average common shares outstanding	106,529		102,071		101,445
Potential dilutive effect of stock options and restricted stock	503		527		410
Weighted average common and common equivalent shares outstanding	107,032		102,598		101,855
Net income attributable to Wynn Resorts, Limited per common share, basic	$	5.37	$	7.32	$	2.39
Net income attributable to Wynn Resorts, Limited per common share, diluted	$	5.35	$	7.28	$	2.38
Anti-dilutive stock options and restricted stock excluded from the calculation of diluted earnings per share	102		106		758

Reconciliation of Amounts Previously Reported and Resulting Impacts from Adoption of New Revenue Recognition Guidance

The tables below provides a reconciliation of amounts previously reported and the resulting impacts from the adoption of the new revenue recognition guidance (in thousands):

	December 31, 2017
	As Previously Reported			Adoption of ASC 606			As Adjusted
Gross revenues	$	6,768,246		$	(698,086	)	$	6,070,160
Promotional allowances	(461,878		)	461,878			—
Operating revenues	6,306,368			(236,208		)	6,070,160
Operating expenses	5,250,803			(236,208		)	5,014,595
Operating income	$	1,055,565		$	—		$	1,055,565

	December 31, 2016
	As Previously Reported			Adoption of ASC 606			As Adjusted
Gross revenues	$	4,836,355		$	(490,558	)	$	4,345,797
Promotional allowances	(370,058		)	370,058			—
Operating revenues	4,466,297			(120,500		)	4,345,797
Operating expenses	3,944,635			(120,500		)	3,824,135
Operating income	$	521,662		$	—		$	521,662