Updates to Significant Accounting Policies (Policies)	3 Months Ended
Updates to Significant Accounting Policies (Policies)	Mar. 31, 2020
Accounting Policies [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	Long-lived assets and Goodwill Long-lived assets and Goodwill are typically reviewed for impairment annually in the fourth quarter and whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable or if an indicator of impairment exists. The Company has continued to monitor the significant global economic uncertainty as a result of COVID-19 to assess the outlook for restaurant operations and the impact that any disruption may have on the Company's business and overall financial performance. As a result of the Company's analysis, and in consideration of the totality of events and circumstances, including the potential impact of COVID-19 related disruptions on the Company’s operating results, there were no indicators of impairment during the first quarter of 2020.
Revenue Recognition, Sales of Goods [Policy Text Block]	Revenue recognition The Company's revenues consist of sales by Company-operated restaurants and fees from restaurants operated by franchisees, developmental licensees and affiliates. Revenues from conventional franchised restaurants include rent and royalties based on a percent of sales with minimum rent payments, and initial fees. Revenues from restaurants licensed to developmental licensees and affiliates include a royalty based on a percent of sales, and generally include initial fees. The Company’s Other revenues are comprised of fees paid by franchisees to recover a portion of costs incurred by the Company for various technology platforms, revenues from brand licensing arrangements to market and sell consumer packaged goods using the McDonald’s brand, and third party revenues for the Dynamic Yield business. Sales by Company-operated restaurants are recognized on a cash basis at the time of the underlying sale and are presented net of sales tax and other sales-related taxes. Royalty revenues are based on a percent of sales and recognized at the time the underlying sales occur. Rental income includes both minimum rent payments, which are recognized straight-line over the franchise term (with the exception of rent concessions as a result of COVID-19 – refer to the Leasing policy update on page 10), and variable rent payments based on a percent of sales, which are recognized at the time the underlying sales occur. Initial fees are recognized as the Company satisfies the performance obligation over the franchise term, which is generally 20 years. The Company provides goods or services related to various technology platforms to certain franchisees that are distinct from the franchise agreement because they do not require integration with other goods or services we provide. The Company has determined that it is the principal in these arrangements. Accordingly, the related revenue is presented on a gross basis on the Condensed Consolidated Statement of Income. These revenues are recognized as the goods or services are transferred to the franchisee, and related expenses are recognized as incurred. Brand licensing arrangement revenues are based on a percent of sales and are recognized at the time the underlying sales occur. Dynamic Yield third party revenues are generated from providing software as a service solutions to customers and are recognized over the applicable subscription period as the service is performed.
Leases of Lessee Disclosure [Text Block]	Leasing The FASB has issued additional guidance for how companies may account for COVID-19 related rent concessions in the form of FASB staff and Board members’ remarks at the April 8, 2020 public meeting and the FASB Staff Q&A issued on April 10, 2020. The Company has elected the practical expedient to account for COVID-19 related rent concessions as if they were part of the enforceable rights and obligations of the parties under the existing lease contract. This has been elected for the Company’s entire lessee and lessor portfolio for any rent deferrals or rent abatements. For the lessee portfolio, the Company has elected not to remeasure the lease liability and right-of-use asset if a rent deferral or a rent abatement is granted. For the first quarter 2020, the Company deferred collection of approximately $300 million of rental income on revenue that was recognized in the first quarter. Rental income includes both minimum rent payments and variable rent payments based on a percent of sales. The extent of the deferrals differ in length by market, but the deferrals primarily impact cash collection in the second quarter of 2020, a large portion of which is expected to be collected in the third and fourth quarters of 2020. Refer to the Cash Flow and Liquidity section on page 24 of this Form 10-Q for additional information on deferred collections of rental income as well as royalties.