Description of Business and Basis of Presentation	6 Months Ended
Description of Business and Basis of Presentation	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation Description of Business OUTFRONT Media Inc. (the “Company”) and its subsidiaries (collectively, “we,” “us” or “our”) is a real estate investment trust (“REIT”), which provides advertising space (“displays”) on out-of-home advertising structures and sites in the United States (the “U.S.”). Our inventory consists of billboard displays, which are primarily located on the most heavily traveled highways and roadways in top Nielsen Designated Market Areas (“DMAs”), and transit advertising displays operated under exclusive multi-year contracts with municipalities in large cities across the U.S. In total, we have displays in all of the 25 largest markets in the U.S. and approximately 120 markets across the U.S. We currently manage our operations through one operating segment, U.S. Billboard and Transit, which is included in our U.S. Media reportable segment. Prior to its sale, our Canadian operations comprised our International operating segment, which did not meet the criteria to be a reportable segment and accordingly, was included in Other. Historical operating results of our Canadian operations are included in Other through the date of sale. On June 7, 2024, we sold all of our equity interests in Outdoor Systems Americas ULC and its subsidiaries (the “Transaction”), which hold all of the assets of the Company’s outdoor advertising business in Canada (the “Canadian Business”). (See Note 11. Acquisitions and Dispositions: Dispositions: Canadian Business.) Basis of Presentation and Use of Estimates The accompanying unaudited consolidated financial statements have been prepared pursuant to the rules of the Securities and Exchange Commission (the “SEC”). In the opinion of our management, the accompanying unaudited consolidated financial statements reflect all adjustments, consisting of normal and recurring adjustments, necessary for a fair statement of our financial position, results of operations and cash flows for the periods presented. These financial statements should be read in conjunction with the more detailed financial statements and notes thereto, included in our Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on February 22, 2024. The preparation of our financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amount of revenues and expenses during the reporting period. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ materially from these estimates under different assumptions or conditions. Out-of-Period Adjustment For the three months ended March 31, 2023, the Company recorded an out-of-period adjustment relating to variable billboard property lease costs and accrued lease and franchise costs in 2022, resulting in a $5.2 million increase in Operating expenses for the three months ended March 31, 2023. The Company assessed the materiality of the amount reflected in this adjustment on its previously issued financial statements in accordance with the SEC’s Staff Accounting Bulletin (“SAB”) No. 99 and SAB No. 108 and concluded that the amount was not material, individually or in the aggregate, to any of its previously issued financial statements.