Organization and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation. The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with the instructions of the Securities and Exchange Commission (the “SEC”) to the Quarterly Report on Form 10-Q and, therefore, do not include all information and notes necessary for complete financial statements in conformity with generally accepted accounting principles in the United States (“GAAP”). The results for the periods indicated are unaudited, but reflect all adjustments, which are of a normal recurring nature, that management considers necessary for a fair presentation of operating results. The results of operations for interim periods are not indicative of a full year of operations. These unaudited Condensed Consolidated Financial Statements and notes thereto should be read in conjunction with the Consolidated Financial Statements and notes thereto included in our Information Statement included as Exhibit 99.1 to our Registration Statement on Form 10 filed with the SEC in final form on April 11, 2016.
Principles of Consolidation	Principles of Consolidation. The unaudited Condensed Consolidated Financial Statements include the accounts of Pinnacle Entertainment, Inc. and its subsidiaries. Investments in the common stock of unconsolidated affiliates in which we have the ability to exercise significant influence are accounted for under the equity method. All intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates. The preparation of unaudited Condensed Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect (i) the reported amounts of assets and liabilities, (ii) the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and (iii) the reported amounts of revenues and expenses during the reporting period. Estimates used by us include, among other things, the estimated useful lives for depreciable and amortizable assets, the estimated allowance for doubtful accounts receivable, estimated income tax provisions, the evaluation of the future realization of deferred tax assets, determining the adequacy of reserves for self-insured liabilities and our customer loyalty programs, estimated cash flows in assessing the recoverability of long-lived assets, asset impairments, goodwill and intangible assets, contingencies and litigation, and estimates of the forfeiture rate and expected life of share-based awards and stock price volatility when computing share-based compensation expense. Actual results may differ from those estimates.
Fair Value	Fair Value. Fair value measurements affect our accounting and impairment assessments of our long-lived assets, investments in unconsolidated affiliates, assets acquired in an acquisition, goodwill, and other intangible assets. Fair value measurements also affect our accounting for certain financial assets and liabilities. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date and is measured according to a hierarchy that includes: “Level 1” inputs, such as quoted prices in an active market for identical assets or liabilities; “Level 2” inputs, which are observable inputs for similar assets; or “Level 3” inputs, which are unobservable inputs.
Land, Buildings, Vessels and Equipment	Land, Buildings, Vessels and Equipment. Land, buildings, vessels and equipment are stated at cost. Land includes land not currently being used in our operations, which totaled $35.8 million as of March 31, 2016. We capitalize the costs of improvements that extend the life of the asset. We expense repair and maintenance costs as incurred. Gains or losses on the disposition of land, buildings, vessels and equipment are included in the determination of income. We review the carrying amounts of our land, buildings, vessels and equipment used in our operations whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable from estimated future undiscounted cash flows expected to result from its use and eventual disposition. If the undiscounted cash flows exceed the carrying amount, no impairment is indicated. If the undiscounted cash flows do not exceed the carrying amount, then an impairment charge is recorded based on the fair value of the asset. Development costs directly associated with the acquisition, development, and construction of a project are capitalized as a cost of the project during the periods in which activities necessary to get the property ready for its intended use are in progress. The costs incurred for development projects are carried at cost. Interest costs associated with development projects are capitalized as part of the cost of the constructed asset. When no debt is incurred specifically for a project, interest is capitalized on amounts expended for the project using our weighted-average cost of borrowing. Capitalization of interest ceases when the project, or discernible portion of the project, is substantially complete. If substantially all of the construction activities of a project are suspended, capitalization of interest will cease until such activities are resumed.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets. Goodwill consists of the excess of the acquisition cost over the fair value of the net assets acquired in business combinations. Indefinite-lived intangible assets include gaming licenses and trade names for which it is reasonably assured that we will continue to renew indefinitely. Goodwill and other indefinite-lived intangible assets are subject to an annual assessment for impairment during the fourth quarter (October 1st test date), or more frequently if there are indications of possible impairment. Amortizing intangible assets include player relationships and favorable leasehold interests. We review amortizing intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. As a result of the Spin-Off and Merger, we will test our reporting unit goodwill and other indefinite-lived intangible assets for impairment. This testing may result in a significant non-cash impairment charge to our goodwill or our other indefinite-lived intangible assets, which would be recognized during the second quarter of 2016.
Customer Loyalty Programs	Customer Loyalty Programs. We offer incentives to our customers through our mychoice customer loyalty program. Under the mychoice customer loyalty program, customers earn points based on their level of play that may be redeemed for various benefits, such as cash back, dining, or hotel stays, among others. The reward credit balance under the plan will be forfeited if the customer does not earn or use any reward credits over the prior six-month period. In addition, based on their level of play, customers can earn additional benefits without redeeming points, such as a car lease, among other items. We accrue a liability for the estimated cost of providing these benefits as the benefits are earned. Estimates and assumptions are made regarding cost of providing the benefits, breakage rates, and the combination of goods and services customers will choose. We use historical data to assist in the determination of estimated accruals. Changes in estimates or customer redemption habits could produce different results.
Revenue Recognition	Revenue Recognition. Gaming revenues consist of the net win from gaming activities, which is the difference between amounts wagered and amounts paid to winning patrons. Cash discounts and other cash incentives to customers related to gaming play are recorded as a reduction to gaming revenue. Food and beverage, lodging, retail, entertainment, and other operating revenues are recognized as products are delivered or services are performed. Advance deposits on lodging are recorded as accrued liabilities until services are provided to the customer. The retail value of food and beverage, lodging and other services furnished to guests on a complimentary basis is included in revenues and then deducted as promotional allowances in calculating total revenues. The estimated cost of providing such promotional allowances is primarily included in gaming expenses.
Gaming Taxes	Gaming Taxes. We are subject to taxes based on gross gaming revenues in the jurisdictions in which we operate, subject to applicable jurisdictional adjustments. These gaming taxes are an assessment on our gaming revenues and are recorded as a gaming expense in our unaudited Condensed Consolidated Statements of Operations.
Pre-opening, Development and Other Costs	Pre-opening, Development and Other Costs. Pre-opening, development and other costs consist of payroll costs to hire, employ and train the workforce prior to opening an operating facility; marketing campaigns prior to and in connection with the opening; legal and professional fees related to the project but not otherwise attributable to depreciable assets; lease payments; real estate taxes; acquisition costs; restructuring costs; and other costs prior to the opening of an operating facility. Pre-opening, development and other costs are expensed as incurred.
Earnings Per Share	Earnings Per Share. The computation of basic and diluted earnings per share is based on net income attributable to Pinnacle Entertainment, Inc. divided by the basic weighted average number of common shares and diluted weighted average number of common shares, respectively. Diluted earnings per share reflect the addition of potentially dilutive securities, which include in-the-money share-based awards. We calculate the effect of dilutive securities using the treasury stock method.
Reclassifications	Reclassifications. The unaudited Condensed Consolidated Financial Statements reflect certain reclassifications to prior year amounts to conform to classification in the current period. These reclassifications had no effect on the previously reported net income.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In May 2014, as part of its ongoing efforts to assist in the convergence of GAAP and International Financial Reporting Standards, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers, which is a new standard related to revenue recognition. Under the new standard, recognition of revenue occurs when a customer obtains control of promised services or goods in an amount that reflects the consideration to which the entity expects to receive in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts. The standard must be adopted using either a full retrospective approach for all periods presented in the period of adoption or a modified retrospective approach. In July 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers - Deferral of the Effective Date, which defers the implementation of this new standard to be effective for fiscal years beginning after December 15, 2017. In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations, which clarifies the implementation guidance on principal versus agent considerations in the new revenue recognition standard pursuant to ASU 2014-09. In April 2016, the FASB issued ASU 2016-10, Identifying Performance Obligations and Licensing, and in May 2016, the FASB issued ASU 2016-12, Narrow-Scope Improvements and Practical Expedients, which amend certain aspects of the new revenue recognition standard pursuant to ASU 2014-09. We are currently evaluating which transition approach we will utilize and the impact of adopting this accounting standard on our unaudited Condensed Consolidated Financial Statements. In June 2014, the FASB issued ASU 2014-12, Accounting for Share-Based Payments when the Terms of an Award Provide that a Performance Target Could be Achieved after the Requisite Service Period. This ASU requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period or periods for which the requisite service has already been rendered. We adopted this guidance during the first quarter of 2016 using a prospective transition approach and it did not have a material impact on our unaudited Condensed Consolidated Financial Statements. In February 2015, the FASB issued ASU No. 2015-02, Amendments to the Consolidation Analysis, which amends 1) the assessment of whether a limited partnership is a variable interest entity; 2) the effect that fees paid to a decision maker have on the consolidation analysis; 3) how variable interests held by a reporting entity’s related parties or de facto agents affect its consolidation conclusion; and 4) for entities other than limited partnerships, clarifies how to determine whether the equity holders as a group have power over an entity. We adopted this guidance during the first quarter of 2016 and it did not have a material impact on our unaudited Condensed Consolidated Financial Statements. In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which requires that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. We adopted this guidance during the first quarter of 2016 and it did not have a material impact on our unaudited Condensed Consolidated Financial Statements. In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, which addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The effective date for this update is for the annual and interim periods beginning after December 15, 2017, with early adoption not permitted. We are currently evaluating the impact of adopting this accounting standard on our unaudited Condensed Consolidated Financial Statements. In February 2016, the FASB issued ASU No. 2016-02, Recognition and Measurement of Leases. Under the new guidance, for all leases (with the exception of short-term leases), at the commencement date, lessees will be required to recognize a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis, and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Further, the new lease guidance simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and liabilities, which no longer provides a source for off balance sheet financing. The effective date for this update is for the annual and interim periods beginning after December 15, 2018 with early adoption permitted. Lessees and lessors must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. We are currently evaluating the impact of adopting this accounting standard on our unaudited Condensed Consolidated Financial Statements. In March 2016, the FASB issued ASU No. 2016-06, Contingent Put and Call Options in Debt Instruments, which clarifies the requirements for assessing whether contingent call or put options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. The effective date for this update is for the annual and interim periods beginning after December 15, 2016, with early adoption permitted. We are currently evaluating the impact of adopting this accounting standard on our unaudited Condensed Consolidated Financial Statements. In March 2016, the FASB issued ASU No. 2016-07, Investments - Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting, which, among other things, eliminates the requirement that when an investment qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by-step basis as if the equity method had been in effect during all previous periods that the investment had been held. The effective date for this update is for the annual and interim periods beginning after December 15, 2016, with early adoption permitted. We are currently evaluating the impact of adopting this accounting standard on our unaudited Condensed Consolidated Financial Statements. In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting, which simplifies several aspects of the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. The effective date for this update is for the annual and interim periods beginning after December 15, 2016, with early adoption permitted. We are currently evaluating the impact of adopting this accounting standard on our unaudited Condensed Consolidated Financial Statements. A variety of proposed or otherwise potential accounting standards are currently under review and study by standard-setting organizations and certain regulatory agencies. Given the tentative and preliminary nature of such proposed standards, we have not yet determined the effect, if any, that the implementation of any such proposed or revised standards would have on our unaudited Condensed Consolidated Financial Statements.