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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) | 3 Months Ended |  |  |  |  |  |  |  |  |  |
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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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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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