v2.4.0.8
Derivative financial instruments and fair value measurements (Tables)
12 Months Ended
Dec. 28, 2013
Derivative Instruments And Hedging Activities Disclosure [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
    December 28, 2013
    Fair value   
    asset (liability)Level 1Level 2Level 3
    $$$$
(a)Commodity futures and forward contracts(1)    
   Unrealized short-term derivative asset1,459 284 1,175 -
   Unrealized long-term derivative asset29 - 29 -
   Unrealized short-term derivative liability(1,841) - (1,841) -
   Unrealized long-term derivative liability(12) - (12) -
(b)Inventories carried at market(2) 11,836 - 11,836 -
(c)Interest rate swaps(3)(311) - (311) -
(d)Forward foreign currency contracts(4) (371) - (371) -
(e)Contingent consideration(5) (2,671) - - (2,671)
        
    December 29, 2012
    Fair value   
    asset (liability)Level 1Level 2Level 3
    $$$$
(a)Commodity futures and forward contracts(1)    
   Unrealized short-term derivative asset3,184 690 2,494 -
   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 swap(3)(396) - (396) -
(d)Forward foreign currency contracts(4)(327) - (327) -
(e)Contingent consideration(5) (4,398) - - (4,398)
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
    Number of bushels
    purchase (sale)
    CornSoybeans
Forward commodity purchase contracts 924 1,030
Forward commodity sale contracts (639) (1,625)
Commodity futures contracts (495) (45)