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SHARE-BASED PAYMENTS - (Details) $ / shares in Units, shares in Thousands, $ in Millions | 12 Months Ended |
--- | --- | ---
May 31, 2026 USD ($) $ / shares shares | May 25, 2025 USD ($) $ / shares shares | May 26, 2024 USD ($) $ / shares shares | Sep. 14, 2023 shares
SHARE-BASED PAYMENTS |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares) | shares | 0 |  |  |
Proceeds from Stock Options Exercised |  |  | $ 3.2 |
Share-Based Payment Arrangement, Exercise of Option, Tax Benefit |  |  | $ 0.3 |
Stock settled share unit awards |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Granted, Performance Shares, share units (in shares) | shares | 3,500 |  | 2,000 |
Performance shares |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Stock-based compensation expense | $ 1.5 |  |  |
Share-Based Payment Arrangement, Income |  | $ 5.8 | $ 7.7 |
Share-Based Payment Arrangement, Expense, Tax Benefit | $ 0.1 | (0.1) | (0.4) |
Granted, Performance Shares, share units (in shares) | shares | 1,020 |  |  |
Granted, Performance Shares, weighted average grant-date fair value (in dollars per share) | $ / shares | $ 18.97 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested | $ 10.3 | 17.1 | 22.6 |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ 4.5 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 1 year 10 months 24 days |  |  |
Performance shares | Fiscal 2026 |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Share based award, vesting period | 3 years |  |  |
Performance shares | Fiscal 2026 | Minimum |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Share based payment award, vesting rights payout, percentage | 0 |  |  |
Performance shares | Fiscal 2026 | Maximum |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Share based payment award, vesting rights payout, percentage | 200 |  |  |
Performance shares | Fiscal 2027 |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Share based award, vesting period | 3 years |  |  |
Employee Stock Option |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Share based award, vesting period | 3 years |  |  |
Employee Stock Option | Minimum |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) | 7 years |  |  |
Employee Stock Option | Maximum |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) | 10 years |  |  |
Conagra Foods Stock Plan |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | shares |  |  |  | 17,400
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | shares | 11,300 |  |  |
Share unit awards | Cash settled restricted stock units |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period (Year) | 3 years |  |  |
Share unit awards | Stock settled share unit awards |  |  |  |
SHARE-BASED PAYMENTS |  |  |  |
Stock-based compensation expense | $ 53.2 | 47.3 | 38.5 |
Share-Based Payment Arrangement, Expense, Tax Benefit | $ 10.7 | $ 9.5 | $ 7.7 |
Granted, Performance Shares, share units (in shares) | shares | 3,490 | 2,200 |  |
Granted, Performance Shares, weighted average grant-date fair value (in dollars per share) | $ / shares | $ 16.86 | $ 27.34 | $ 30.2 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested | $ 47.7 | $ 43.1 | $ 28.3 |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ 48.7 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 1 year 8 months 12 days |  |  |

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