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LONG-TERM DEBT AND REVOLVING CREDIT FACILITY - Narrative (Details) - USD ($) |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 09, 2016 | Jan. 25, 2016 | Feb. 26, 2017 | Aug. 28, 2016 | Feb. 28, 2016 | Nov. 29, 2015 | Feb. 26, 2017 | Feb. 28, 2016 | Feb. 16, 2017
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Principal balance of senior notes repaid |  |  |  |  |  |  | $ 1,062,300,000 | $ 2,519,900,000 |
Net loss as a cost of early retirement of debt |  |  |  |  |  |  | $ 93,300,000 | 23,900,000 |
Senior notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Net loss as a cost of early retirement of debt | $ 60,600,000 |  |  |  | $ 23,900,000 |  |  |  |
Senior notes | 5.819% senior notes due 2017 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Retirement of senior notes | 250,200,000 |  |  |  |  |  |  |  |
Senior notes | 7.0% senior notes due 2019 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Retirement of senior notes | 86,900,000 |  |  |  |  |  |  |  |
Senior notes | 1.9% senior notes due 2018 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Retirement of senior notes | 880,400,000 |  |  |  |  |  |  |  |
Senior notes | 2.1% senior notes due 2018 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Retirement of senior notes | 154,900,000 |  |  |  |  |  |  |  |
Senior notes | 4.95% senior notes due 2020 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Retirement of senior notes | 71,100,000 |  |  |  |  |  |  |  |
Discontinued operations, spinoff | Lamb Weston |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount of senior notes issued by Lamb Weston | $ 1,540,000,000 |  |  |  |  |  |  |  |
Senior notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Net loss as a cost of early retirement of debt |  |  | $ 32,700,000 |  |  |  |  |  |
Tender premium |  |  |  |  | 109,500,000 |  |  | 109,500,000 |
Senior notes | 5.819% senior notes due 2017 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Principal balance of senior notes repaid |  |  | $ 224,800,000 |  |  |  |  |  |
Stated interest rate | 5.819% |  | 5.819% |  |  |  | 5.819% |  |
Senior notes | 7.0% senior notes due 2019 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Principal balance of senior notes repaid |  |  | $ 248,200,000 |  |  |  |  |  |
Stated interest rate | 7.00% |  | 7.00% |  |  |  | 7.00% |  |
Repurchased aggregate principal amount of senior notes |  |  |  |  | 139,900,000 |  |  | 139,900,000 |
Senior notes | 1.9% senior notes due 2018 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stated interest rate | 1.90% |  |  |  |  |  |  |  |
Senior notes | 2.1% senior notes due 2018 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stated interest rate | 2.10% |  |  |  |  |  |  |  |
Senior notes | 4.95% senior notes due 2020 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stated interest rate | 4.95% |  |  |  |  |  |  |  |
Repurchased aggregate principal amount of senior notes |  |  |  |  | 85,000,000 |  |  | 85,000,000 |
Senior notes | Senior notes due 2043 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repurchased aggregate principal amount of senior notes |  |  |  |  | 560,300,000 |  |  | 560,300,000 |
Senior notes | Senior notes due 2039 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repurchased aggregate principal amount of senior notes |  |  |  |  | 341,800,000 |  |  | 341,800,000 |
Senior notes | Senior notes due 2026 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repurchased aggregate principal amount of senior notes |  |  |  |  | 110,000,000 |  |  | 110,000,000 |
Senior notes | Senior notes due 2023 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repurchased aggregate principal amount of senior notes |  |  |  |  | $ 163,000,000 |  |  | $ 163,000,000 |
Senior notes | 1.30% senior notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Principal balance of senior notes repaid |  | $ 750,000,000 |  |  |  |  |  |  |
Stated interest rate |  | 1.30% |  |  |  |  |  |  |
Senior notes | 1.35% senior notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Principal balance of senior notes repaid |  |  |  |  |  | $ 250,000,000 |  |  |
Stated interest rate |  |  |  |  |  | 1.35% |  |  |
Floating rate notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repayment of floating rate notes |  |  |  | $ 550,000,000 |  |  |  |  |
Term loans |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Term loans funding repayment of senior notes |  | $ 600,000,000.0 |  |  |  |  |  |  |
Credit Agreement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  | $ 1,250,000,000.00
Maximum aggregate principal amount |  |  |  |  |  |  |  |  | $ 1,750,000,000.00
Outstanding borrowings under revolving credit facility |  |  | $ 0 |  |  |  | $ 0 |  |

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