Accounting Standards Adopted and Newly Issued Accounting Standards Not Yet Adopted (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Changes and Error Corrections [Abstract]
Fiscal Period	The Company’s fiscal quarters end on the Sunday closest to the last day of each calendar quarter. For convenience, the fiscal quarters of each year are referred to as ending on March 31, June 30, September 30 and December 31. The first fiscal quarter of 2020 began on December 30, 2019 and ended on March 29, 2020. The first fiscal quarter of 2019 began on December 31, 2018 and ended on March 31, 2019.
Risks and Uncertainties	Risks and Uncertainties The Company is subject to risks and uncertainties as a result of the rapidly spreading outbreak of a novel strain of coronavirus, designated “COVID-19.” The extent of the impact of the COVID-19 pandemic on the Company's business is highly uncertain and difficult to predict, as the response to the pandemic varies by state and municipalities within states. Assessments of the success of measures taken and the timing of any relaxation thereof is rapidly evolving. The Company first began to experience impacts from COVID-19 in March 2020, as federal, state and local governments began to react to the public health crisis by encouraging “social distancing” and requiring, in varying degrees, restaurant dine-in limitations and other restrictions that largely limited the restaurants of the Company's franchisees and its company-operated restaurants to take-out and delivery sales. Many international restaurants were temporarily closed for at least a part of March as well as a result of government restrictions put in place in various countries. Additionally, economies worldwide also have been negatively impacted by the COVID-19 pandemic, which possibly could cause a domestic and/or global economic recession. Such economic disruption could have an ongoing material adverse effect on our business. The severity of the impact of the COVID-19 pandemic on the Company's business will depend on a number of factors, including, but not limited to, whether, when or the manner in which the conditions surrounding the pandemic may change, including the timing of lifting any mandated closures or operating restrictions on restaurants, customer re-engagement with our brands and the short- and long-term impact on consumer discretionary spending and the domestic economy in general, all of which are uncertain and cannot be predicted. The Company's future results of operations and liquidity could be adversely impacted by the length of time dine-in restrictions are in place and the success of any initiatives or programs that the Company may undertake to address financial and operational challenges faced by itself and its franchisees. As such, the extent to which the COVID-19 pandemic may materially impact the Company's financial condition, liquidity, or results of operations is highly uncertain.
Accounting Standards Adopted in the Current Fiscal Year and Not Yet Adopted	Accounting Standards Adopted in the Current Fiscal Year In February 2016, the Financial Accounting Standards Board (“FASB”) issued new guidance on the measurement of current expected credit losses (“CECL”) on financial instruments. The new guidance has replaced the incurred loss methodology of recognizing credit losses on financial instruments with a methodology that estimates the expected credit loss on financial instruments and reflects the net amount expected to be collected on the financial instrument. The Company adopted this change in accounting principle as of the first day of the first fiscal quarter of 2020 using the modified retrospective method. Accordingly, financial information for periods prior to the date of initial application has not been adjusted. Upon adoption of the new CECL guidance, the Company recognized an increase to its allowance for credit losses of $0.7 million. The Company recognized an adjustment to retained earnings upon adoption of $0.5 million, net of tax of $0.2 million. Additional new accounting guidance became effective for the Company as of the beginning of fiscal 2020 that the Company reviewed and concluded was either not applicable to its operations or had no material effect on its consolidated financial statements in the current or future fiscal years. Newly Issued Accounting Standards Not Yet Adopted In December 2019, the FASB issued new guidance intended to simplify the accounting for income taxes, change the accounting for certain income tax transactions, and make other minor changes. The Company will be required to adopt the new guidance beginning with its first fiscal quarter of 2021; early adoption in any interim period after issuance of the new guidance is permitted. The Company is currently assessing the impact this guidance will have on its consolidated financial statements but does not expect this standard to have a material effect on its financial statements. The Company does not intend to adopt the standard early. The Company reviewed all other newly issued accounting pronouncements and concluded that they either are not applicable to the Company's operations or that no material effect is expected on the Company's financial statements when adoption is required in the future.