Exhibit 12 Computation of Ratio of Earnings to Fixed Charges (Dollars in Millions, Except Ratios) Nine Months Ended Years Ended December 31 --------------------------------------------------------- September 30, 2002 2001 2000 1999 1998 1997 ------------------ ---- ---- ---- ---- ---- Earnings: Net earnings $250.4 $273.6 $285.4 $318.5 $243.0 $149.0 Extraordinary loss - - - - - 14.0 Provision for income taxes 88.0 44.2 111.0 140.4 122.4 91.7 Amortization of capitalized interest 0.4 0.6 0.5 0.3 0.2 0.2 Fixed charges excluding interest capitalized 17.1 26.3 24.2 21.3 19.3 18.7 ------ ------ ------ ------ ------ ------ Total $355.9 $344.7 $421.1 $480.5 $384.9 $273.6 ====== ====== ====== ====== ====== ====== Fixed Charges: Interest expense (gross of interest income) $ 9.5 $ 16.5 $ 15.0 $ 13.0 $ 12.6 $ 13.0 Amortization of deferred financing expense 0.5 0.3 0.3 0.3 0.5 0.6 Interest capitalized 0.4 0.3 0.8 1.0 0.6 0.5 Interest component of rental expense 7.1 9.5 8.9 8.0 6.2 5.1 ------ ------ ------ ------ ------ ------ Total $ 17.5 $ 26.6 $ 25.0 $ 22.3 $ 19.9 $ 19.2 ====== ====== ====== ====== ====== ====== Ratio of Earnings to Fixed Charges 20.3 13.0 (a) 16.8 (b) 21.5 19.3 14.3 ====== ====== ====== ====== ====== ====== (a) Excluding an $87.7 million ($64.5 million, net of tax) restructuring and related inventory charge in 2001, the company's ratio of earnings to fixed charges would have been 16.2 times. (b) Excluding a $41.3 million ($29.7 million, net of tax) restructuring charge in 2000, the company's ratio of earnings to fixed charges would have been 18.5 times. In the computation of the company's ratio of earnings to fixed charges, earnings consist of earnings before income taxes, plus fixed charges, less capitalized interest, plus amortization of capitalized interest. Fixed charges consist of interest expense excluding the benefit of capitalized interest and including a reasonable approximation of the interest component included in rental expense.