Significant Accounting Policies (Policies)	6 Months Ended
Nov. 26, 2023
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	The accompanying Condensed Consolidated Financial Statements of Conagra Brands, Inc. (the "Company", "Conagra Brands", "we", "us", or "our") have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and with the rules and regulations for reporting on Form 10-Q. Accordingly, they do not include certain information and disclosures required for comprehensive financial statements. The unaudited financial information reflects all adjustments, which are, in the opinion of management, necessary for a fair presentation of the results of operations, financial position, and cash flows for the periods presented. During the second quarter of fiscal 2024, we determined that certain assets and liabilities were held for sale. We have reclassified these assets and liabilities within our Condensed Consolidated Balance Sheets for all periods presented (see Note 2). All other adjustments are of a normal recurring nature. The results of operations for any quarter or a partial fiscal year period are not necessarily indicative of the results to be expected for other periods or the full fiscal year. These Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended May 28, 2023. There were no significant changes to our accounting policies from those disclosed in Note 1, "Summary of Significant Accounting Policies", to the Consolidated Financial Statements in that Form 10-K.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Pronouncements In September 2022, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2022-04, Supplier Finance Programs (Topic 405-50) - Disclosure of Supplier Finance Program Obligations, to add disclosure requirements related to supplier financing programs under Accounting Standards Codification 405, Liabilities. The guidance requires entities that maintain supplier financing programs to provide information in their financial statements about their use of supplier finance programs and their effect on the entity's working capital, liquidity, and cash flows. Specifically, the amendment requires entities to disclose the key terms of their programs, amounts outstanding, balance sheet presentation, and a roll-forward of amounts outstanding during the annual period. Only the amount outstanding at the end of the period is required to be disclosed in interim periods. We adopted this ASU when it became effective in the first quarter of fiscal 2024, except for the roll-forward requirement, which will be effective in fiscal 2025. The adoption of this ASU did not have a significant impact on our financial statements and related disclosures. Recently Issued Accounting Pronouncements In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The disclosure requirements must be applied retrospectively to all prior periods presented in the financial statements. The effective date for the standard is for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. We are in the process of analyzing the impact of the ASU on our related disclosures. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures, to provide more detailed income tax disclosure requirements. The guidance requires entities to disclose disaggregated information about their effective tax rate reconciliation as well as information on income taxes paid. The disclosure requirements will be applied on a prospective basis, with the option to apply it retrospectively. The effective date for the standard is for fiscal years beginning after December 15, 2024. Early adoption is permitted. We are in the process of analyzing the impact of the ASU on our related disclosures.

Significant Accounting Policies (Policies)

6 Months Ended

Nov. 26, 2023

Basis of Accounting, Policy [Policy Text Block]

The accompanying Condensed Consolidated Financial Statements of Conagra Brands, Inc. (the "Company", "Conagra Brands", "we", "us", or "our") have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and with the rules and regulations for reporting on Form 10-Q. Accordingly, they do not include certain information and disclosures required for comprehensive financial statements. The unaudited financial information reflects all adjustments, which are, in the opinion of management, necessary for a fair presentation of the results of operations, financial position, and cash flows for the periods presented. During the second quarter of fiscal 2024, we determined that certain assets and liabilities were held for sale. We have reclassified these assets and liabilities within our Condensed Consolidated Balance Sheets for all periods presented (see Note 2). All other adjustments are of a normal recurring nature. The results of operations for any quarter or a partial fiscal year period are not necessarily indicative of the results to be expected for other periods or the full fiscal year. These Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended May 28, 2023. There were no significant changes to our accounting policies from those disclosed in Note 1, "Summary of Significant Accounting Policies", to the Consolidated Financial Statements in that Form 10-K.

New Accounting Pronouncements, Policy [Policy Text Block]

Recently Adopted Accounting Pronouncements

In September 2022, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2022-04, Supplier Finance Programs (Topic 405-50) - Disclosure of Supplier Finance Program Obligations, to add disclosure requirements related to supplier financing programs under Accounting Standards Codification 405, Liabilities. The guidance requires entities that maintain supplier financing programs to provide information in their financial statements about their use of supplier finance programs and their effect on the entity's working capital, liquidity, and cash flows. Specifically, the amendment requires entities to disclose the key terms of their programs, amounts outstanding, balance sheet presentation, and a roll-forward of amounts outstanding during the annual period. Only the amount outstanding at the end of the period is required to be disclosed in interim periods. We adopted this ASU when it became effective in the first quarter of fiscal 2024, except for the roll-forward requirement, which will be effective in fiscal 2025. The adoption of this ASU did not have a significant impact on our financial statements and related disclosures.

Recently Issued Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The disclosure requirements must be applied retrospectively to all prior periods presented in the financial statements. The effective date for the standard is for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. We are in the process of analyzing the impact of the ASU on our related disclosures.

In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures, to provide more detailed income tax disclosure requirements. The guidance requires entities to disclose disaggregated information about their effective tax rate reconciliation as well as information on income taxes paid. The disclosure requirements will be applied on a prospective basis, with the option to apply it retrospectively. The effective date for the standard is for fiscal years beginning after December 15, 2024. Early adoption is permitted. We are in the process of analyzing the impact of the ASU on our related disclosures.