DEBT AND FINANCING OBLIGATIONS - Tabular Disclosure - Components (Details) - USD ($) $ in Millions	Aug. 26, 2018	May 27, 2018
Debt and Financing Obligations
Short-term borrowings	$ 8.8	$ 9.6
Long-term debt	2,317.5	2,326.8
Financing obligations:	80.0	79.0
Total debt and financing obligations	2,406.3	2,415.4
4.625% Senior Notes, due 2024 | Senior Notes
Debt and Financing Obligations
Long-term debt	833.0	833.0
4.875% Senior Notes, due 2026 | Senior Notes
Debt and Financing Obligations
Long-term debt	833.0	833.0
Revolving Credit Facility, November 2016 | Secured Debt | Revolving Credit Facility
Debt and Financing Obligations
Short-term borrowings	0.0	0.0
Term Loan Facility, due 2021 | Secured Debt
Debt and Financing Obligations
Long-term debt	624.3	632.8
Other credit facilities
Debt and Financing Obligations
Short-term borrowings	8.8	9.6
Lamb Weston BSW Installment Notes
Debt and Financing Obligations
Long-term debt	27.2	28.0
4.35% lease financing obligation due May 2030
Debt and Financing Obligations
Financing obligations:	66.5	66.8
Lease financing obligations due on various dates through 2040
Debt and Financing Obligations
Financing obligations:	$ 13.5	$ 12.2