Summary of Significant Accounting Policies (Policies)	6 Months Ended
Summary of Significant Accounting Policies (Policies)	Jun. 30, 2017
Accounting Policies [Abstract]
Gaming Taxes	Gaming Taxes We are subject to taxes based on gross gaming revenues in the jurisdictions in which we operate. These gaming taxes are assessed based on our gaming revenues and are recorded as a gaming expense in the condensed consolidated statements of operations. These taxes totaled approximately $83.8 million and $81.5 million for the three months ended June 30, 2017 and 2016, respectively, and $167.0 million and $164.1 million for the six months ended June 30, 2017 and 2016, respectively.
Income Taxes	Income Taxes Income taxes are recorded under the asset and liability method, whereby deferred tax assets and liabilities are recognized based on the future tax consequences attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. We reduce the carrying amounts of deferred tax assets by a valuation allowance, if based on all evidence, it is more likely than not that such assets will not be realized. Use of the term "more likely than not" indicates the likelihood of occurrence is greater than 50%. Accordingly, the need to establish valuation allowances for deferred tax assets is continually assessed based on a more-likely-than-not realization threshold. This assessment considers, among other matters, the nature, frequency and severity of current and cumulative losses, forecasts of profitability, the duration of statutory carryforward periods, our experience with the utilization of operating loss and tax credit carryforwards before expiration and tax planning strategies. In making such judgments, significant weight is given to evidence that can be objectively verified. For the six months ended June 30, 2017, we computed our provision by applying the annual effective tax rate method. For the six months ended June 30, 2016, we computed our provision for income taxes by applying the actual effective tax rate, under the discrete method, to year-to-date income. The discrete method was used to calculate our income tax provision as the annual effective tax rate was not considered a reliable estimate of year-to-date income tax expense. Other Long Term Tax Liabilities The Company's income tax returns are subject to examination by the Internal Revenue Service ("IRS") and other tax authorities in the locations where it operates. The Company assesses potentially unfavorable outcomes of such examinations based on accounting standards for uncertain income taxes, which prescribe a minimum recognition threshold a tax position is required to meet before being recognized in the financial statements. Uncertain tax position accounting standards apply to all tax positions related to income taxes. These accounting standards utilize a two-step approach for evaluating tax positions. Recognition occurs when the Company concludes that a tax position, based on its technical merits, is more likely than not to be sustained upon examination. Measurement is only addressed if the position is deemed to be more likely than not to be sustained. The tax benefit is measured as the largest amount of benefit that is more likely than not to be realized upon settlement. Tax positions failing to qualify for initial recognition are recognized in the first subsequent interim period that they meet the "more likely than not" standard. If it is subsequently determined that a previously recognized tax position no longer meets the "more likely than not" standard, it is required that the tax position is derecognized. Accounting standards for uncertain tax positions specifically prohibit the use of a valuation allowance as a substitute for derecognition of tax positions. As applicable, the Company will recognize accrued penalties and interest related to unrecognized tax benefits in the provision for income taxes. Accrued interest and penalties are included in other long-term tax liabilities on the balance sheet.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Accounting Standards Update 2017-9, Compensation-Stock Compensation ("Update 2017-09") In May 2017, the Financial Accounting Standards Board ("FASB") issued Update 2017-09, which amends the scope of modification accounting for share-based payment arrangements. An entity should account for the effects of a modification unless the fair value, vesting conditions, and classification of the awards are the same immediately before and after the modification. The standard is effective for the financial statements issued for annual periods and interim periods within those annual periods, beginning after December 15, 2017, and early adoption is permitted. The Company adopted Update 2017-09 during second quarter 2017. The early adoption did not have a material impact on our condensed consolidated financial statements. Accounting Standards Update 2017-04, Intangibles-Goodwill and Other ("Update 2017-04") In January 2017, the FASB issued Update 2017-04, which addresses goodwill impairment testing. Instead of determining goodwill impairment by calculating the implied fair value of goodwill, an entity should perform goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. The standard is effective for financial statements issued for annual periods and interim periods within those annual periods, beginning after December 15, 2019, and early adoption is permitted. The Company adopted Update 2017-04 effective January 1, 2017. The early adoption did not have an impact on our condensed consolidated financial statements. Accounting Standards Update 2014-09, Revenue from Contracts with Customers ("Update 2014-09"); Accounting Standards Update 2015-14, Revenue from Contracts with Customers - Deferral of the Effective Date ("Update 2015-14" ); Accounting Standards Update 2016-08, Revenue from Contracts with Customers - Principal versus Agent Considerations (Reporting Revenue Gross versus Net) ("Update 2016-08"); Accounting Standards Update 2016-10, Revenue from Contracts with Customers - Identifying Performance Obligations and Licensing ("Update 2016-10"); Accounting Standards Update 2016-11, Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815) - Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting ("Update 2016-11"); and Accounting Standards Update 2016-12, Revenue from Contracts with Customers - Narrow-Scope Improvements and Practical Expedients ("Update 2016-12"); (collectively, the “Revenue Standard”) The Revenue Standard prescribes a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. Interpretations of the Revenue Standard are on-going and could have a significant impact on our implementation. Currently, we expect that the historical presentation which reflects revenues gross for goods and services provided to our customers as an inducement to play with us, with an offsetting reduction for promotional allowances to derive net revenues, will no longer be allowed. Instead, revenues will be allocated among our departmental classifications based on the relative standalone selling prices of the goods and services provided to the customer. We currently anticipate that this methodology will result in a reduction of our reported gaming revenues by an amount equivalent to our reported promotional allowance revenues. We also expect the accounting for our frequent player programs to be impacted, with possible changes to the timing and/or classification of certain transactions within revenues and between revenues and operating expenses. The Revenue Standard is effective for our Company on January 1, 2018, and must be adopted by applying either a full retrospective approach for all periods presented in the period of adoption or a modified retrospective approach with the cumulative effect of initially applying the guidance recognized at the date of initial application. We currently anticipate adopting the Revenue Standard by applying the full retrospective approach. We are continuing to update our assessment of the effects of the Revenue Standard on our condensed consolidated financial statements, including the planned method of adoption and the quantification of the effects of the new guidance, and we will disclose those effects when known. A variety of proposed or otherwise potential accounting standards are currently being studied by standard-setting organizations and certain regulatory agencies. Because of the tentative and preliminary nature of such proposed standards, we have not yet determined the effect, if any, that the implementation of such proposed standards would have on our condensed consolidated financial statements.

Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.