XML 87 R72.htm IDEA: XBRL DOCUMENT v3.7.0.1
Employee Benefit Plan Obligations Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 24, 2017
Feb. 26, 2016
Feb. 27, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Pension Contributions $ 5.0    
Other Postretirement Benefits Payments 4.0    
Deferred Compensation Arrangement with Individual, Compensation Expense $ 8.5 $ 5.9 $ 5.7
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate 4.50% 4.50%  
Defined Contribution Plan, Cost Recognized $ 32.7 $ 28.8 26.3
Defined Contribution Plan, Estimated Future Employer Contributions in Next Fiscal Year 34.5    
Defined Benefit Plan, Fair Value of Plan Assets 46.7 47.3  
Defined Benefit Plan, Effect of change in assumption on Accumulated Benefit Obligation 17.8    
Other Postretirement Benefit Plans, Defined Benefit [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets 0.0 0.0 0.0
Defined Benefit Plan, Benefit Obligation (46.0) (66.2) (73.7)
Pension Plans, Defined Benefit [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined Benefit Plan Expected Future Benefit Payments due to annuitization Year One 18.0    
Defined Benefit Plan, Fair Value of Plan Assets 46.7 47.3 54.5
Defined Benefit Plan, Benefit Obligation $ (96.8) $ (93.4) $ (103.6)
Pre-Age 65 Retirees [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year 7.28% 7.72%  
Qualified Defined Benefit Pension Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined Benefit Plan, Fair Value of Plan Assets $ 18.4    
Defined Benefit Plan, Benefit Obligation 18.2    
Benefit Plan, Benefit plan assets in excess of benefit obligations 0.2    
Defined Benefit Plan, Effect of Settlements and Curtailments on Accumulated Benefit Obligation $ 7.0