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Debt (Schedule Of Debt) (Detail) - USD ($)
$ in Millions
Sep. 30, 2016
Jan. 01, 2016
Debt Instrument [Line Items]    
Total debt $ 669.8 $ 729.7
Less: Short-term debt 145.3 118.3
Long-term debt 524.5 611.4
Uncommitted Facilities [Member]    
Debt Instrument [Line Items]    
Total debt 145.0 118.0
Senior Notes [Member]    
Debt Instrument [Line Items]    
Principal amount 400.0 400.0
Unamortized discount on Notes (2.6) (2.8)
Debt issuance costs (2.5) (2.7)
Promissory Notes And Other Debt [Member]    
Debt Instrument [Line Items]    
Total debt 0.9 1.2
Long-term debt 0.6 0.9
2014 Credit Facility [Member] | Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Total debt $ 129.0 $ 216.0