Long-Term Debt - Summary of Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument
Long-term debt total	$ 7,345,262	$ 6,587,568
Current portion of long-term debt	0	(1,050)
Non current portion of long-term debt	7,345,262	6,586,518
Wynn Macau | Term Loans | Senior Secured Credit Facility Term Loans
Debt Instrument
Long-term debt total	948,823	948,028
Wynn Macau | Revolving Credit Facility | Senior Revolving Credit Facility due July 31, 2017
Debt Instrument
Long-term debt total	132,524	0
Wynn Macau | Senior Notes | 5 1/4% Wynn Macau Senior Notes, Due October 15, 2021
Debt Instrument
Long-term debt total	1,355,141	600,000
Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp | Senior Notes | 4 1/4% Wynn Las Vegas Senior Notes Due May 30, 2023
Debt Instrument
Long-term debt total	500,000	500,000
Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp | First Mortgage Notes | 7 7/8% Wynn Las Vegas First Mortgage Notes, Due May 1, 2020
Debt Instrument
Long-term debt total	345,731	350,547
Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp | First Mortgage Notes | 7 3/4% Wynn Las Vegas First Mortgage Notes, Due August 15, 2020
Debt Instrument
Long-term debt total	1,226,600	1,320,000
Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp | First Mortgage Notes | 5 3/8% Wynn Las Vegas First Mortgage Notes, Due March 15, 2022
Debt Instrument
Long-term debt total	900,000	900,000
Aruze USA, Inc. | Promissory Note | Redemption Price Promissory Note With Former Stockholder and Related Party, Due February 18, 2022; Interest At 2%
Debt Instrument
Long-term debt total	1,936,443	1,936,443
World Travel, LLC | Secured Debt | $42 Million Note Payable, Due April 1, 2017
Debt Instrument
Long-term debt total	$ 0	$ 32,550