v2.4.0.8
Derivative financial instruments and fair value measurements (Tables)
9 Months Ended
Sep. 28, 2013
Derivative Instruments And Hedging Activities Disclosure [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
    September 28, 2013
    Fair value   
    asset (liability)Level 1Level 2Level 3
    $$$$
(a)Commodity futures and forward contracts(1)    
   Unrealized short-term derivative asset2,077 2701,807 -
   Unrealized long-term derivative asset12 -12 -
   Unrealized short-term derivative liability(3,209) -(3,209) -
   Unrealized long-term derivative liability(161) -(161) -
(b)Inventories carried at market(2)11,521 -11,521 -
(c)Interest rate swaps(3)(188) -(188) -
(d)Forward foreign currency contracts(4)(365) -(365) -
(e)Contingent consideration(5)(3,161) -0(3,161)
        
    December 29, 2012
    Fair value   
    asset (liability)Level 1Level 2Level 3
    $$$$
(a)Commodity futures and forward contracts(1)    
   Unrealized short-term derivative asset3,184 6902,494 -
   Unrealized long-term derivative asset93 -93 -
   Unrealized short-term derivative liability(1,623) -(1,623) -
   Unrealized long-term derivative liability(43) -(43) -
(b)Inventories carried at market(2)15,426 -15,426 -
(c)Interest rate swaps(3)(396) -(396) -
(d)Forward foreign currency contracts(4)(327) -(327) -
(e)Contingent consideration(5)(4,398) -0(4,398)
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
    Number of bushels
    purchase (sale)
    CornSoybeans
Forward commodity purchase contracts 684 479
Forward commodity sale contracts (689) (1,347)
Commodity futures contracts (95) 330