Long-Term Debt - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	6 Months Ended												1 Months Ended		6 Months Ended	12 Months Ended	1 Months Ended	6 Months Ended		12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	1 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended			1 Months Ended
	Feb. 18, 2012	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Feb. 29, 2012	Jun. 30, 2013 Amended Wynn Macau Credit Facilities	Jul. 31, 2012 Amended Wynn Macau Credit Facilities	Jul. 31, 2012 Funded Amended Wynn Macau Credit Facilities	Jul. 31, 2012 Senior Secured Revolving Credit Facility Amended Wynn Macau Credit Facilities	Jun. 30, 2013 Mortgage Notes	Dec. 31, 2012 Mortgage Notes	Jun. 30, 2013 Other Debt Instruments	Dec. 31, 2012 Other Debt Instruments	May 22, 2013 7 7/8% Wynn Las Vegas First Mortgage Notes, Due November 1, 2017	May 15, 2013 7 7/8% Wynn Las Vegas First Mortgage Notes, Due November 1, 2017	Jun. 30, 2013 7 7/8% Wynn Las Vegas First Mortgage Notes, Due November 1, 2017	Dec. 31, 2012 7 7/8% Wynn Las Vegas First Mortgage Notes, Due November 1, 2017	May 22, 2013 Four Point Twenty Five Senior Notes Due 2023	Jun. 30, 2013 Four And One Over Four Percentage Wynn Las Vegas Senior Notes Due May Thirty Two Thousand Twenty Three	Jun. 30, 2013 7 7/8% Wynn Las Vegas First Mortgage Notes, Due May 1, 2020	Dec. 31, 2012 7 7/8% Wynn Las Vegas First Mortgage Notes, Due May 1, 2020	Jun. 30, 2013 7 3/4% Wynn Las Vegas First Mortgage Notes, Due August 15, 2020	Dec. 31, 2012 7 3/4% Wynn Las Vegas First Mortgage Notes, Due August 15, 2020	Jun. 30, 2013 5 3/8% Wynn Las Vegas First Mortgage Notes, Due March 15, 2022	Dec. 31, 2012 5 3/8% Wynn Las Vegas First Mortgage Notes, Due March 15, 2022	Feb. 14, 2013 Redemption Price Promissory Note With Former Stockholder And Related Party, Due February 18, 2022; Interest At 2%	Jun. 30, 2013 Redemption Price Promissory Note With Former Stockholder And Related Party, Due February 18, 2022; Interest At 2%	Dec. 31, 2012 Redemption Price Promissory Note With Former Stockholder And Related Party, Due February 18, 2022; Interest At 2%	Jun. 30, 2013 Senior Credit Facility	Jun. 30, 2013 Senior Credit Facility HIBOR Minimum	Jun. 30, 2013 Senior Credit Facility HIBOR Maximum	Jul. 30, 2013 Senior Credit Facility Subsequent Event
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount		$ 1,940,000,000	$ 1,940,000,000		$ 1,940,000,000	$ 1,940,000,000										$ 500,000,000			$ 500,000,000									$ 1,940,000,000
Debt instrument, interest rate																7.875%	7.875%	7.875%	4.25%		7.875%	7.875%	7.75%	7.75%	5.375%	5.375%		2.00%	2.00%
Long-term debt due year																2017			2023
Tender offer expiration date																	May 21, 2013
Valid tenders received at time of cash tender offer expiration																	274,700,000
Cash tender offer, consideration paid																	19,600,000
Cash tender offer, consideration paid per principal amount																	$ 1,071.45
Principal amount for cash tender offer																	1,000
Unamortized debt issue costs and original issue discount																	6,700,000
Loss on retirement of debt		(26,578,000)	(26,578,000)	(4,828,000)													300,000
Debt instrument, redemption terms															The Issuers satisfied and discharged the 2017 Indenture and, in November 2013,
Debt instrument issuance date																				May 22, 2013
Capitalized financing costs																				4,100,000
Debt maturity date																	Nov. 01, 2017	Nov. 01, 2017		May 30, 2023	May 01, 2020	May 01, 2020	Aug. 15, 2020	Aug. 15, 2020	Mar. 15, 2022	Mar. 15, 2022		Feb. 18, 2022	Feb. 18, 2022	Jul. 31, 2018
Debt instrument, redemption terms																				The Issuers may, at their option, redeem the 2023 Notes, in whole or in part, at any time or from time to time prior to their stated maturity. The redemption price for 2023 Notes that are redeemed before February 28, 2023 will be equal to the greater of (a) 100% of the principal amount of the 2023 Notes to be redeemed or (b) a "make-whole" amount described in the 2023 Indenture, plus in either case accrued and unpaid interest to, but not including, the redemption date.
Debt redemption date																				Feb. 28, 2023
Debt redemption price as percentage of principal																				100.00%
Percentage of principal repayment on the event of change of control																				101.00%
Long-term debt due year																					2020		2020		2022
Payment Default Classification Period for Interest Payment																				30 days
Common stock redeemed, shares	24,549,222		24,549,222
Interest payment due																											38,700,000
Debt purchase price percentage of aggregate principal amount		101.00%	101.00%
Line of credit								2,300,000,000	750,000,000	1,550,000,000
Availability of credit facility							1,550,000,000
Increase of credit facility																																	200,000,000
Interest rate																															1.75%	2.50%
Long-term debt		6,011,813,000	6,011,813,000		5,782,820,000						3,300,000,000	3,100,000,000	782,700,000	783,400,000			222,254,000	492,616,000			350,460,000	350,378,000	1,320,000,000	1,320,000,000	900,000,000	900,000,000		1,936,443,000	1,936,443,000
Fair value of debt instrument											$ 3,500,000,000	$ 3,400,000,000	$ 767,200,000	$ 760,800,000