XML 71 R56.htm IDEA: XBRL DOCUMENT v3.8.0.1
Summary of Significant Accounting Policies Warranty roll-forward (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 23, 2018
Feb. 24, 2017
Feb. 26, 2016
Feb. 27, 2015
Accounting Policies [Abstract]        
Standard and Extended Product Warranty Accrual $ 36.8 $ 41.3 $ 42.1 $ 39.4
Standard and Extended Product Warranty Accrual, Period Increase (Decrease) 10.6 19.5 18.1  
Standard and Extended Product Warranty Accrual, Decrease for Payments 15.8 20.1 16.0  
Standard and Extended Product Warranty Accrual, Foreign Currency Translation Gain (Loss) $ 0.7 $ (0.2) $ 0.6