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v3.25.2

Investments in Unconsolidated Affiliates - Additional Information (Detail) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
May 29, 2024 | Aug. 03, 2022 | May 31, 2024 | May 31, 2025 | May 31, 2024 | May 31, 2023
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Impairment charge of long-lived assets |  |  |  | $ 50,813 | [1] |  | $ 484
Investments in unconsolidated affiliates |  |  | $ 144,863 | 129,262 |  | $ 144,863 |
Excess dividends received from investing activity |  |  |  |  |  | 1,085 |
Samuel Joint Venture | Joint Venture Transactions |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Consolidated retained earnings undistributed earnings net of tax |  |  | 37,398 | 33,011 |  | 37,398 |
Hexagon |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Percentage of sale of nominal share capital of former Sustainable Energy Solutions | 51.00% |  |  |  |  |  |
Cash consideration | $ 11,986 |  |  |  |  |  |
Percent of noncontrolling interest | 49.00% |  |  |  |  |  |
Impairment charge of long-lived assets |  |  | 32,203 |  |  |  |
Deal costs |  |  |  | $ 473 |  | 1,250 |
Hexagon | Joint Venture Transactions |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Percent of noncontrolling interest | 49.00% |  |  |  |  |  |
Sustainable Energy Solutions Joint Venture |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Assets, Fair Value Disclosure | $ 31,367 |  |  |  |  |  |
Sustainable Energy Solutions Joint Venture | Joint Venture Transactions |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Percent of noncontrolling interest | 2.00% |  |  |  |  |  |
ArtiFlex |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Percent of ownership interest held in unconsolidated affiliates |  |  |  | 50.00% |  |  | 50.00%
Equity method investment sold amount after adjustments for closing debt and final net working capital |  | $ 35,795 |  |  |  |  |
Pre-tax loss on sale of equity |  | $ 16,059 |  |  |  |  | $ 16,059
ClarkDietrich |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Percent of ownership interest held in unconsolidated affiliates |  |  |  | 25.00% |  |  |
Sustainable Energy Solutions |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Percent of ownership interest held in unconsolidated affiliates |  |  |  | 49.00% |  |  |
WAVE |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Percent of ownership interest held in unconsolidated affiliates |  |  |  | 50.00% |  |  |
Investments in unconsolidated affiliates |  |  | $ 111,905 | $ 103,767 |  | 111,905 |
Workhorse |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Percent of ownership interest held in unconsolidated affiliates |  |  |  | 20.00% |  |  |
Serviacero Worthington |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |
Distributions from unconsolidated affiliates |  |  |  | $ 153,605 |  | $ 187,258 | $ 228,357
[1] | Significant pre-tax impairment charges include $50,050 in the fourth quarter of fiscal 2025 related to the write-down of intangible assets associated with GTI.

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