Description of Business and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 28, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The Company operates and reports financial information on a 52 or 53-week year with the fiscal year ending on the Sunday closest to December 31. The quarters ended September 28, 2025 and September 29, 2024 were both 13-week periods. The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of KKI and its subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). Accordingly, these interim financial statements do not include all information and footnotes required under GAAP for complete financial statements. In the opinion of management, the accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of results of operations, balance sheet, cash flows, and shareholders’ equity for the periods presented. All significant intercompany balances and transactions among KKI and its subsidiaries have been eliminated in consolidation. Investments in entities over which the Company has the ability to exercise significant influence but which it does not control and whose financial statements are not otherwise required to be consolidated, are accounted for using the equity method.
Consolidation	The accompanying unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto as of and for the year ended December 29, 2024, included in the Annual Report on Form 10-K. The Condensed Consolidated Balance Sheet as of December 29, 2024 was derived from audited annual financial statements but does not contain all of the footnote disclosures from the annual financial statements. The results of operations for the quarter and three quarters ended September 28, 2025 are not necessarily indicative of the results of operations that may be achieved for the entire fiscal year ending December 28, 2025. Noncontrolling interest in the Company’s Condensed Consolidated Financial Statements represents the interest in subsidiaries held by joint venture partners and employee shareholders. The joint venture partners hold noncontrolling interests in the Company’s consolidated subsidiaries W.K.S. Krispy Kreme, LLC (“WKS Krispy Kreme”) and Krispy K Canada, Inc. (“KK Canada”). Employee shareholders hold noncontrolling interests in the consolidated subsidiaries Krispy Kreme Holdings Pty Ltd. (“KK Australia”), Krispy Kreme Mexico Holding S.A.P.I. de C.V. (“KK Mexico”), and Krispy Kreme Doughnut Japan Co., Ltd. Since the Company consolidates the financial statements of these subsidiaries, the noncontrolling owners’ share of each subsidiary’s net assets and results of operations are deducted and reported as noncontrolling interest in the Condensed Consolidated Balance Sheets and as net income attributable to noncontrolling interest in the Condensed Consolidated Statements of Operations and comprehensive income attributable to noncontrolling interest in the Condensed Consolidated Statements of Comprehensive (Loss)/Income.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which focuses on the rate reconciliation and income taxes paid disclosures. The ASU requires a public business entity (“PBE”) to disclose, on an annual basis, a tabular rate reconciliation using both percentages and currency amounts, broken out into specified categories with certain reconciling items further disaggregated by nature and jurisdiction to the extent those items exceed a specified threshold. In addition, all entities are required to disclose income taxes paid, net of refunds received disaggregated by federal, state, and foreign and by individual jurisdiction if the amount is at least 5% of total income tax payments, net of refunds received. For PBEs, the ASU is effective for annual periods beginning after December 15, 2024, with early adoption permitted. An entity should apply the amendments in this ASU prospectively, with retrospective application permitted. The Company expects this ASU to impact its annual income tax disclosures, but with no impacts to its results of operations, cash flows, and financial condition. In November 2024, the FASB issued ASU 2024-03, Income Statement (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires a PBE to disclose in the notes to the financial statements, at each interim and annual reporting period, specified information about certain costs and expenses, including (a) purchases of inventory, (b) employee compensation, (c) depreciation, (d) intangible asset amortization, and (e) depreciation, depletion, and amortization recognized as part of oil and gas-producing activities, for each income statement line item that contains those expenses. For PBEs, the ASU is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. An entity may apply the amendments in this ASU prospectively or retrospectively. The Company expects this ASU to impact its expense disclosures, but with no impacts to its results of operations, cash flows, and financial condition. In September 2025, the FASB issued ASU 2025-06, Intangibles (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, which clarifies and modernizes the accounting for costs related to internal-use software. The guidance removes all references to project stages in Accounting Standards Codification (“ASC”) 350-40, Intangibles — Goodwill and Other — Internal-Use Software and clarifies the threshold entities apply to begin capitalizing costs. The new guidance requires an entity to start capitalizing software costs when (a) management has authorized and committed to funding the software project, and (b) it is probable that the project will be completed and the software will be used to perform the function intended. For PBEs, the ASU is effective for annual periods beginning after December 15, 2027, and interim periods within those annual periods, with early adoption permitted. Entities may apply the amendments in this ASU using a prospective, retrospective, or modified transition approach. The Company does not expect this ASU to materially impact its results of operations, cash flows, and financial condition.