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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014 Other Observable Inputs (Level 2)	Dec. 31, 2013 Other Observable Inputs (Level 2)	Feb. 18, 2012 Aruze USA, Inc.	Mar. 31, 2014 Fair Value, Measurements, Recurring	Dec. 31, 2013 Fair Value, Measurements, Recurring	Mar. 31, 2014 Fair Value, Measurements, Recurring Other Observable Inputs (Level 2)	Dec. 31, 2013 Fair Value, Measurements, Recurring Other Observable Inputs (Level 2)	Mar. 31, 2014 Redemption Price Promissory Note With Former Stockholder And Related Party, Due February 18, 2022; Interest At 2%	Dec. 31, 2013 Redemption Price Promissory Note With Former Stockholder And Related Party, Due February 18, 2022; Interest At 2%
Summary of Significant Accounting Policies [Line Items]
Unrecognized tax benefits	$ 29,300,000
Percentage of ownership in joint ventures	50.00%
Cash equivalents							1,583,046,000	1,349,647,000	1,582,841,000	1,128,724,000
Bank deposits and cash on hand							1,690,600,000	1,085,400,000
Restricted cash	0		199,900,000
Percentage of credit markers due from customers residing outside of the United States	84.00%		86.00%
Debt instrument, principal amount						1,940,000,000.00
Debt instrument, interest rate						2.00%					2.00%	2.00%
Gaming tax expenses	$ 550,200,000	$ 481,200,000
Percentage of cash equivalents which are deposits held in foreign currencies				63.00%	91.00%

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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