N O T E S T O C O N S O L I D A T E D F I N A N C I A L S T A T E M E N T S December 31, 2011, 2010 and 2009 (currencies in millions)  N. STOCKHOLDERS’ EQUITY Accumulated Other Comprehensive (Loss) Income:  Following are the components of accumulated other  comprehensive income: Other Capital Stock Changes:  In 2011, the Company purchased and retired 9.2 million treasury shares. In April  2010, the Company retired .4 million of its common shares held as treasury stock. As part of its risk management strategy, the Company enters into derivative contracts to hedge against interest rate  and foreign currency risk. O. DERIVATIVE FINANCIAL INSTRUMENTS Interest-Rate Contracts:  The Company enters into various interest-rate contracts, including interest-rate swaps and  cross currency interest-rate swaps. Interest-rate swaps involve the exchange of fixed for floating rate or floating for  fixed rate interest payments based on the contractual notional amounts in a single currency. Cross currency  interest-rate swaps involve the exchange of notional amounts and interest payments in different currencies. The  Company is exposed to interest rate and exchange rate risk caused by market volatility as a result of its borrowing  activities. The objective of these contracts is to mitigate the fluctuations on earnings, cash flows and fair value of  borrowings. Net amounts paid or received are reflected as adjustments to interest expense.  At December 31, 2011, the notional amount of the Company’s interest-rate contracts was $2,914.1. Notional  maturities for all interest-rate contracts are $705.6 for 2012, $708.9 for 2013, $1,037.2 for 2014, $387.2 for 2015,  $39.1 for 2016 and $36.1 thereafter. The majority of these contracts are floating to fixed swaps that effectively  convert an equivalent amount of commercial paper and other variable rate debt to fixed rates.  Foreign-Exchange Contracts:  The Company enters into foreign-exchange contracts to hedge certain anticipated  transactions and assets and liabilities denominated in foreign currencies, particularly the Canadian dollar, the  euro, the British pound, the Australian dollar and the Mexican peso. The objective is to reduce fluctuations in  earnings and cash flows associated with changes in foreign currency exchange rates. At December 31, 2011, the  notional amount of the outstanding foreign-exchange contracts was $185.7. Foreign-exchange contracts mature  within one year. At December 31, 2011  2010 2009 Unrealized gain on investments  $  9.4 $  .8  $  1.4 Tax effect (2.8) (.3) (.5)  6.6 .5 .9 Unrealized loss on derivative contracts  (32.3) (27.1) (73.4) Tax effect  10.3 9.2 25.0 (22.0) (17.9) (48.4) Pension and postretirement: Unrecognized: Actuarial loss  (722.5) (465.1) (444.7) Prior service cost  (12.3) (13.9) (14.7) Net initial obligation  (.6) (.7) (.6) Tax effect  257.3 167.3 159.9 (478.1) (312.4) (300.1) Currency translation adjustment  274.5 371.1 383.8 Accumulated other comprehensive (loss) income  $(219.0) $  41.3  $  36.2