Derivatives Not Designated as Hedging Instruments Hedges Cash flow hedges Gains and losses on U.S. dollar forward sales are included in foreign exchange gains (losses) in non-operating income  (expense) (Note 9). At December 31, 2012, U.S. dollar forward sales contracts with a notional amount of US$295 million remained outstanding.  The contracts matured in early 2013. These contracts have been designated as cash flow hedges of a portion of our  future cash flows from anticipated U.S. dollar coal sales. We have determined that they are highly effective hedges  from inception to December 31, 2012. Unrealized gains and losses on our U.S. dollar forward sales contracts designated as cash flow hedges are recorded in  other comprehensive income. Realized gains and losses on these settled contracts are recorded in revenue. Generations 129 (Cdn$ in millions)  2012 Zinc Forward  Copper  U.S. Dollar  Debt  Settlements Sales and  Forward  Forward  Prepayment  Receivable Purchases  Sales  Sales  Rights  and Payable Other Total Amount of gain (loss) recognized in other operating income (expense)  $ (2) $ 8 $ – $ – $ 45 $ (6) $ 45 Amount of gain recognized in non-operating income  $ – $ – $ 4 $ 116 $ – $ 3 $ 123 (Cdn$ in millions)  2011 Zinc Forward  Copper  U.S. Dollar  Debt  Settlements Sales and  Forward  Forward  Prepayment  Receivable Purchases  Sales  Sales  Rights  and Payable Other Total Amount of gain (loss) recognized in other operating income (expense) $ 7 $ – $ – $ – $ (210) $ – $ (203) Amount of gain recognized in non-operating income $ – $ – $ – $ 146 $ – $ – $ 146