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GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS - Other Identifiable Intangible Assets (Details) - USD ($)
$ in Millions
Aug. 26, 2018
May 27, 2018
GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS    
Gross Carrying Amount, non-amortizing intangible assets $ 18.0 $ 18.0
Gross Carrying Amount, amortizing intangible assets 34.9 35.2
Total intangible assets, excluding goodwill 52.9 53.2
Accumulated Amortization, amortizing intangible assets 18.1 17.8
Total intangible assets, net of amortization, excluding goodwill $ 34.8 $ 35.4