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Retirement Plans (Expected Benefit Payments) (Details) (USD $)
In Millions, unless otherwise specified
May 25, 2014
Defined Benefit Plans
 
Defined Benefit Plan Disclosure [Line Items]  
2015 $ 21.2
2016 10.2
2017 10.6
2018 11.1
2019 11.5
2020-2025 68.7
Postretirement Benefit Plan
 
Defined Benefit Plan Disclosure [Line Items]  
2015 1.1
2016 1.2
2017 1.2
2018 1.3
2019 1.4
2020-2025 $ 8.5