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Income Taxes (Allocation Of Total Income Tax Expense) (Details) - USD ($)
$ in Millions
12 Months Ended
May 27, 2018
May 28, 2017
May 29, 2016
Income Tax Disclosure [Abstract]      
Earnings from continuing operations $ 1.9 $ 154.8 $ 90.0
Earnings from discontinued operations (4.8) (4.2) 3.4
Total consolidated income tax expense (benefit) $ (2.9) $ 150.6 $ 93.4