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Property, Plant And Equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 24, 2017
Feb. 26, 2016
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 1,367.7 $ 1,348.4
Property, plant and equipment, accumulated depreciation (959.6) (936.8)
Property, plant and equipment, net 408.1 411.6
Land and Land Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 31.7 32.7
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 703.8 660.7
Property, plant and equipment, net 184.7 158.5
Building and Building Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 383.4 379.3
Property, plant and equipment, net 110.2 110.1
Software and Software Development Costs [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 104.5 105.4
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 55.9 56.9
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 59.0 56.0
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 29.4 $ 57.4
Minimum [Member] | Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 3 years  
Minimum [Member] | Building and Building Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 10 years  
Minimum [Member] | Software and Software Development Costs [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 3 years  
Minimum [Member] | Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 5 years  
Minimum [Member] | Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 3 years  
Maximum [Member] | Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 15 years  
Maximum [Member] | Building and Building Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 40 years  
Maximum [Member] | Software and Software Development Costs [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 10 years  
Maximum [Member] | Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 8 years  
Maximum [Member] | Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 10 years