XML 67 R51.htm IDEA: XBRL DOCUMENT v3.8.0.1
Significant Accounting Policies (Investments) (Details) - USD ($)
$ in Millions
Dec. 30, 2017
Dec. 31, 2016
Investment [Line Items]    
Cost method investments $ 0.5 $ 2.0
Other Noncurrent Liabilities    
Investment [Line Items]    
Equity method investments $ 1.8 $ 1.3