NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
	Feb. 25, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited Consolidated Financial Statements present the financial results of Lamb Weston and its consolidated subsidiaries for the thirteen and thirty-nine weeks ended February 25, 2024 and February 26, 2023, and have been prepared in accordance with generally accepted accounting principles (“GAAP”) in the United States of America (“U.S.”). These consolidated financial statements are unaudited and include all adjustments that we consider necessary for a fair presentation of such financial statements and consist only of normal recurring adjustments. The preparation of financial statements involves the use of estimates and accruals. The actual results that we experience may differ materially from those estimates. Results for interim periods should not be considered indicative of results for our full fiscal year, which ends the last Sunday in May. These financial statements and related condensed notes should be read together with the consolidated financial statements and notes in our Annual Report on Form 10-K for the fiscal year ended May 28, 2023 (the “Form 10-K”), where we include additional information on our critical accounting estimates, policies, and the methods and assumptions used in our estimates. We filed the Form 10-K with the Securities and Exchange Commission (the “SEC”) on July 25, 2023. Certain amounts from prior period consolidated financial statements have been reclassified to conform with current period presentation.
Accounting Pronouncements Not Yet Adopted	Accounting Pronouncements Not Yet Adopted In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. ASU 2023-07 expands public entities’ segment disclosures by requiring disclosure of significant segment expenses that are regularly provided to the chief operating decision maker and included within each reported measure of segment profit or loss, an amount and description of its composition for other segment items, and interim disclosures of a reportable segment’s profit or loss and assets. ASU 2023-07 is effective for our Annual Report on Form 10-K for the fiscal year ending May 25, 2025, and subsequent interim periods, with early adoption permitted. We are evaluating the impact of adopting this ASU on our consolidated financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, to enhance transparency and decision usefulness of income tax disclosures, particularly around rate reconciliations and income taxes paid information. ASU 2023-09 is effective for our Annual Report on Form 10-K for the fiscal year ending May 25, 2025, on a prospective basis, with early adoption permitted. We are evaluating the impact of adopting this ASU on our consolidated financial statements and related disclosures. There were no other accounting pronouncements recently issued that had or are expected to have a material impact on our consolidated financial statements.
Inventories	Inventories are valued at the lower of cost (determined using the first-in, first-out method) or net realizable value and include all costs directly associated with manufacturing products: materials, labor, and manufacturing overhead.

Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.